Substituted triazole diamine derivatives as kinase inhibitors

ABSTRACT

The present invention provides substituted triazole diamine derivatives as selective kinase or dual-kinase inhibitors and a method for treating or ameliorating a selective kinase or dual-kinase mediated disorder.

This Application claims priority from U.S. provisional patent application No. 60/257,703 entitled “1,2,4-triazole-3,5-diamine derivatives” filed Dec. 22, 2000 the contents of which are hereby incorporated by reference.

FIELD OF THE INVENTION

The present invention provides substituted triazole diamine derivatives as selective kinase or dual-kinase inhibitors and a method of use thereof. More particularly, the present invention provides substituted 1,2,4-triazole-3,5-diamine derivatives as selective kinase or dual-kinase inhibitors and a method for treating or ameliorating a selective kinase or dual-kinase mediated disorder.

BACKGROUND OF THE INVENTION

Patent application WO 99/21845 describes 4-aminothiazole derivatives as inhibitors of cyclin dependent kinases of the formula:

wherein R₁ is a substituted or unsubstituted group selected from: C₁₋₆ alkyl (e.g., methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, or tert-butyl); C₁₋₆-alkenyl; C₁₋₆-alkynyl; C₁₋₆-alkoxyl; C₁₋₆-alcohol; carbocyclic or heterocyclic cycloalkyl, which may be monocyclic or fused or non-fused polycyclic (e.g., cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl) or heterocycloalkyl, which may be monocyclic or fused or non-fused polycyclic (e.g., pyrrolidinyl, piperidinyl, morpholinyl); carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic aryl (e.g., phenyl, naphthyl, pyrrolyl, indolyl, furanyl, thiophenyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, triazolyl, tetrazolyl, pyrazolyl, pyridinyl, quinolinyl, isoquinolinyl, acridinyl, pyrazinyl, pyridazinyl, pyrimidinyl, benzimidazolyl, benzothiophenyl, or benzofuranyl); carbonyl (e.g., carboxyl, ester, aldehyde, or ketone); ether; (C₁₋₆ alkyl)-carbonyl; (C₁₋₆ alkyl)-aryl; (C₁₋₆ alkyl)-cycloalkyl; (C₁₋₆ alkyl)-(C₁₋₆-alkoxyl); aryl-(C₁₋₆-alkoxyl); thioether (e.g., aryl-S-aryl, cycloalkyl-S-aryl, cycloalkyl-S-cycloalkyl, or dialkyl sulfide); thiol; and sulfonyl; and R₂ is a substituted or unsubstituted: carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic, ring structure; where each optional substituent for R₁ and R₂ is independently a halogen (e.g., chloro, iodo, bromo, or fluoro); oxygen (═O); haloalkyl (e.g., trifluoromethyl); C₁₋₆ alkyl; C₁₋₆-alkenyl; C₁₋₆-alkynyl; hydroxyl; C₁₋₆-alkoxyl; carbocyclic cycloalkyl, which may be monocyclic or fused or non-fused polycyclic (e.g., cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl), or a heterocycloalkyl, which may be monocyclic or fused or non-fused polycyclic (e.g., pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, or thiazinyl); carbocyclic or heterocyclic, monocyclic or fused or non-fused polycyclic aryl (e.g., phenyl, naphthyl, pyrrolyl, indolyl, furanyl, thiophenyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, triazolyl, tetrazolyl, pyrazolyl, pyridinyl, quinolinyl, isoquinolinyl, acridinyl, pyrazinyl, pyridazinyl, pyrimidinyl, benzimidazolyl, benzothiophenyl, or benzofuranyl); amino (primary, secondary, or tertiary); nitro; thiol; thioether; imine; cyano; amido; phosphonato; phosphine; carboxyl; thiocarbonyl; sulfonyl; sulfonamide; ketone; aldehyde; or ester; (ii) pharmaceutically acceptable salts of compounds of the Formula; and (iii) prodrugs and pharmaceutically active metabolites of compounds of the Formula or pharmaceutically acceptable salts thereof, and (b) a pharmaceutically acceptable carrier.

Patent application WO 01/09106 describes diamino-1,2,4-triazole-carboxylic and derivatives as GSK-3 (glycogen synthase kinase) inhibitors of formula (I):

wherein the R³CZ-moiety may be attached to the nitrogen atom at position I or the nitrogen atom at position 2; R¹ is hydrogen, alkyl, aryl, aralkyl, aralkenyl or alicyclic; R² is hydrogen, alkyl, aryl, aralkyl, aralkenyl or alicyclic, or R¹ and R² together with the nitrogen atom to which they are attached may form a heterocyclic ring which ring may be unsubstituted or substituted; R³ is alkyl, aryl, aralkyl, aryl(Q)alkyl, where Q is O or S, aralkenyl, alicyclic, heteroaryl, heteroaralkyl, arylcarbonylalkyl, alicyclylalkyl, diarylalkyl, or NR⁶R⁷; R⁴ is hydrogen, alkyl, aryl, aralkyl, aralkenyl or alicyclic; R⁵ is hydrogen, alkyl, aryl, aralkyl, aralkenyl or alicyclic, or R⁴ and R⁵ together with the nitrogen atom to which they are attached may form a heterocyclic ring which ring may be unsubstituted or substituted; R⁶ is hydrogen, aryl or alicyclic; R⁷ is hydrogen, aryl or alicyclic, and; Z is oxygen or sulphur. Suitably, R¹ is hydrogen or unsubstituted or substituted phenyl, wherein the substituents for the phenyl group are independently selected from up to three of C₁-C₆alkyl, C₁-C₆alkoxy, C₁-C₆alkoxy(C₁-C₆)alkyl, aryl, aryloxy, halo, hydroxy, carboxy, cyano, and nitro. Favourably, R¹ is phenyl either unsubstituted or substituted with up to three of methyl, methoxy, or chloro. Suitably, R² is hydrogen or unsubstituted or substituted phenyl, wherein the substituents for the phenyl group are independently selected from up to three of C₁-C₆alkyl, C₁-C₆alkoxy, C₁-C₆alkoxy(C₁-C₆)alkyl, aryl, aryloxy, halo, hydroxy, carboxy, cyano, and nitro. Favourably, R² is hydrogen. Suitably, R³ is unsubstituted or substituted phenyl, unsubstituted or substituted naphthyl, unsubstituted or substituted benzyl, unsubstituted or substituted thienylmethyl, unsubstituted or substituted phenylthiomethyl, unsubstituted or substituted naphthylmethyl, unsubstituted or substituted furylethenyl, unsubstituted or substituted cyclohexyl, unsubstituted or substituted pyridyl, unsubstituted or substituted indolylmethyl, unsubstituted or substituted phenylcarbonylethyl, unsubstituted or substituted cyclopentenylmethyl, unsubstituted or substituted phenylpropyl, unsubstituted or substituted diphenylethyl, wherein the substituents for the R³ aryl groups are selected from —O(CH₂)_(n)O—, where n is 1 to 3, or up to three of halo, aryl, perfluoro(C₁-C₆)alkyl, nitro, arylcarbonyl, aryloxy, C₁-C₆acyl; or R³ is NR⁶R⁷ where R⁶ and R⁷ are each independently hydrogen, unsubstituted or substituted aryl, or unsubstituted or substituted C₁-C₆alicyclic, wherein the substituents for the R⁶ and R⁷ groups are independently selected from up to three of halo, aryl, aryloxy, alkyl, nitro, and alkoxy. Favourably, R³ is phenyl either unsubstituted or substituted with up to three of chloro, bromo, phenyl, trifluoromethyl, nitro, benzoyl, phenoxy, acetyl, or 3,4-OCH₂O—; naphthyl; benzyl either unsubstituted or substituted with up to three of phenyl or fluoro; 2-thienylmethyl; phenylthiomethyl 2-naphthylmethyl; cyclohexyl; 3-pyridyl; 3-indolylmethyl; phenylcarbonylethyl; cyclopent-2-enylmethyl; phenylpropyl; 2,2-diphenylethyl; or 2-furylethenyl; or NR⁶R⁷ where R⁶ and R⁷ are each independently hydrogen, phenyl either unsubstituted or substituted with up to three of chloro, phenyl, phenoxy, methyl, bromo, nitro, or methoxy; cyclohexyl; or 1-naphthyl. Suitably, R⁴ is hydrogen. Suitably, R⁵ is hydrogen. Suitably, R⁶ is unsubstituted or substituted aryl or unsubstituted or substituted alicyclic. Favourably R⁶ is cyclohexyl, naphthyl or phenyl which phenyl group may be either unsubstituted or substituted with up to three of chloro, bromo, phenyl, methyl, phenoxy, nitro or methoxy. Suitably, R⁷ is hydrogen.

U.S. Pat. No. 5,750,545 describes triazole derivatives, as agents for the prophylaxis and treatment of immune-related diseases, of formula (I) and formula (III):

wherein

-   X is an oxygen atom or a sulfur atom; W is —NR⁴R⁵ or —SR⁶; R¹ is a     hydrogen atom, lower alkyl, —NR¹⁰R¹¹, —N═R¹³ or a group of the     formula (II)     wherein -   Y is a hydrogen atom, a lower alkyl, a lower alkoxy, a halogen, a     cyano, a nitro, a lower alkyl substituted by halogen, —N¹⁴R¹⁵, a     tetrazolyl, an optionally substituted phenyl, a hydroxy or a     carboxyl, L is a direct bond, an oxygen atom, a sulfur atom, an     alkylene, a vinylene or an ethynylene, and n is an integer of 1 to     3, provided that when n is 2 or 3, Y may be the same or different;     and R² and R³ are the same or different and each is a hydrogen atom     or a lower alkyl; wherein R⁴ and R⁵ are the same or different and     each is a hydrogen atom, an optionally substituted lower alkyl,     cycloalkyl, a phenyl or —(CH₂)_(m)COOR¹⁶, R¹⁶ is a hydrogen atom or     a lower alkyl, m is an integer of 1 to 6, R⁶ is a lower alkyl, R¹⁰     and R¹¹ are the same or different and each is a hydrogen atom, an     optionally substituted benzoyl, an optionally substituted phenyl, a     lower alkylcarbonyl or —COCOOR¹⁷, R¹⁷ is a lower alkyl, R¹³ is an     optionally substituted methylene, R¹⁴ and R¹⁵ are the same or     different and each is a hydrogen atom, a lower alkyl, —COCOOR¹⁷ or     —CSNHR¹⁸, and R¹⁸ is a lower alkyl, or a pharmaceutically acceptable     salt thereof.

Accordingly, it is an object of the present invention to provide substituted triazole diamine derivatives as selective kinase or dual-kinase inhibitors and a method of use thereof. It is an object of the present invention to provide substituted 1,2,4-triazole-3,5-diamine derivatives as selective kinase or dual-kinase inhibitors and a method of use for treating or ameliorating a selective kinase or dual-kinase mediated disorder.

SUMMARY OF THE INVENTION

The present invention provides a compound of Formula (I):

wherein

-   R₁ is selected from the group consisting of C₁₋₈alkyl, -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein heterocyclyl     is optionally substituted with 1 to 2 oxo substituents; and, wherein     cycloalkyl, heterocyclyl, aryl and heteroaryl are substituted with a     substituent selected from the group consisting of:     -   C₁₋₈alkyl (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of —C(O)H,         —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,         hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and heteroaryl),     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —SO₂—(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl) and heteroaryl)},     -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein         cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally         substituted with 1 to 3 substituents independently selected from         the group consisting of cyano, halo, hydroxy and nitro; wherein         heterocyclyl is optionally substituted with 1 to 2 oxo         substituents; and, wherein cycloalkyl, heterocyclyl, aryl and         heteroaryl are optionally substituted with a substituent         selected from the group consisting of C₁₋₈alkyl (wherein alkyl         is optionally substituted on a terminal carbon with a         substituent selected from the group consisting of amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₈alkyl), cyano,         (halo)₁₋₃, hydroxy and nitro), C₁₋₈alkoxy and amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₈alkyl)}}; -   R₂ is selected from the group consisting of hydrogen, C₁₋₈alkyl,     C₂₋₈alkenyl, C₂₋₈alkynyl and hydroxy(C₁₋₈)alkyl; -   X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—;     and, -   R₃ is selected from the group consisting of:     -   C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl {wherein alkyl, alkenyl and         alkynyl are optionally substituted on a terminal carbon with a         substituent selected from the group consisting of —C(O)H,         —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,         hydroxy, nitro, aryl and heteroaryl (wherein aryl and heteroaryl         are optionally substituted with 1 to 5 substituents         independently selected from the group consisting of C₁₋₈alkyl,         cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl, (halo)₁₋₃(C₁₋₈)alkoxy,         hydroxy, hydroxy(C₁₋₈)alkyl, hydroxy(C₁₋₈)alkoxy and nitro)},     -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,         heterocyclyl, aryl and heteroaryl are optionally substituted         with 1 to 3 substituents independently selected from the group         consisting of cyano, halo, hydroxy and nitro; and, wherein         cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally         substituted with 1 to 2 substituents independently selected from         the group consisting of:         -   C₁₋₈alkyl, C₂₋₈alkenyl (wherein alkyl and alkenyl are             optionally substituted on a terminal carbon with a             substituent selected from the group consisting of —C(O)H,             —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted             with two substituents independently selected from the group             consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,             hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and             heteroaryl),         -   —CH(OH)—(C₁₋₈)alkyl,         -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with             a substituent selected from the group consisting of             (halo)₁₋₃ and hydroxy),         -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,         -   amino (substituted with two substituents independently             selected from the group consisting of hydrogen, C₁₋₈alkyl             and —C(O)(C₁₋₈)alkyl),         -   —C(O)amino (wherein amino is substituted with two             substituents independently selected from the group             consisting of hydrogen and C₁₋₈alkyl),         -   —SO₂— {substituted with one substituent selected from the             group consisting of heterocyclyl and amino (wherein amino is             substituted with two substituents independently selected             from the group consisting of hydrogen, C₁₋₈alkyl and             —C₁₋₈alkylamino (wherein amino is substituted with two             substituents independently selected from the group             consisting of hydrogen and C₁₋₈alkyl))},         -   —NH—SO₂—(C₁₋₈)alkyl,         -   cycloalkyl, heterocyclyl (optionally substituted with 1 to 2             oxo substituents), aryl and heteroaryl} and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl, cycloalkyl, aryl and     heteroaryl (wherein cycloalkyl, aryl and heteroaryl are optionally     substituted with 1 to 5 substituents independently selected from the     group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}; -   and pharmaceutically acceptable salts thereof.

An embodiment of the present invention is a method for treating or ameliorating a selective kinase or dual-kinase mediated disorder.

An embodiment of the present invention includes a method for producing the instant compounds and pharmaceutical compositions and medicaments thereof.

DETAILED DESCRIPTION OF THE INVENTION

Embodiments of the present invention include compounds of Formula (I) wherein, preferably, R₁ is selected from the group consisting of: C₁₋₄alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl (wherein cycloalkyl, heterocyclyl, aryl and heteroaryl are substituted with a substituent selected from the group consisting of:

-   -   C₁₋₄alkyl (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of —C(O)H,         —C(O)(C₁₋₄)alkyl, —CO₂H, —CO₂(C₁₋₄)alkyl, amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₄alkyl), cyano, (halo)₁₋₃,         hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and heteroaryl),     -   C₁₋₄alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₄)alkyl, —CO₂H, —CO₂(C₁₋₄)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₄alkyl and         —SO₂—(C₁₋₄)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₄alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₄alkyl, —C₁₋₄alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₄alkyl) and heteroaryl)},     -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein         cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally         substituted with 1 to 3 substituents independently selected from         the group consisting of cyano, halo, hydroxy and nitro; wherein         heterocyclyl is optionally substituted with 1 to 2 oxo         substituents; and, wherein cycloalkyl, heterocyclyl, aryl and         heteroaryl are optionally substituted with a substituent         selected from the group consisting of C₁₋₄alkyl (wherein alkyl         is optionally substituted on a terminal carbon with a         substituent selected from the group consisting of amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₄alkyl), cyano,         (halo)₁₋₃, hydroxy and nitro), C₁₋₄alkoxy and amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₄alkyl)}}.

More preferably, R₁ is selected from the group consisting of C₁₋₄alkyl and aryl {wherein aryl is substituted with a substituent selected from the group consisting of:

-   -   C₁₋₄alkyl (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₄alkyl), cyano,         (halo)₁₋₃, hydroxy and nitro),     -   C₁₋₄alkoxy,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₄alkyl and         —SO₂—(C₁₋₄)alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₄alkyl, —C₁₋₄alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₄alkyl) and heteroaryl)},     -   heterocyclyl (wherein heterocyclyl is optionally substituted         with 1 to 2 substituents independently selected from the group         consisting of C₁₋₄alkyl and oxo) and heteroaryl}.

Most preferably, R₁ is selected from the group consisting of C₁₋₄alkyl and phenyl {wherein phenyl is substituted with a substituent selected from the group consisting of: amino (substituted with two substituents independently selected from the group consisting of:

-   -   hydrogen, C₁₋₄alkyl and —SO₂—(C₁₋₄)alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of piperidinyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₄alkyl, —C₁₋₄alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₄alkyl) and pyridinyl)}, and     -   piperazinyl (wherein piperazinyl is optionally substituted with         1 to 2 C₁₋₄alkyl substituents), imidazolidinyl, isothiazolidinyl         (wherein imidazolidinyl and isothiazolidinyl are optionally         substituted with 1 to 2 oxo substituents), imidazolyl and         triazolyl}.

Embodiments of the present invention include compounds of Formula (I) wherein, preferably, R₂ is selected from the group consisting of hydrogen, C₁₋₄alkyl, C₂₋₄alkenyl, C₂₋₄alkynyl and hydroxy(C₁₋₄)alkyl.

More preferably, R₂ is selected from the group consisting of hydrogen and C₁₋₄alkyl.

Most preferably, R₂ is hydrogen.

Embodiments of the present invention include compounds of Formula (I) wherein, preferably, X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—.

Embodiments of the present invention include compounds of Formula (I) wherein, preferably, R₃ is selected from the group consisting of:

-   -   C₁₋₄alkyl, C₂₋₄alkenyl, C₂₋₄alkynyl {wherein alkyl, alkenyl and         alkynyl are optionally substituted on a terminal carbon with a         substituent selected from the group consisting of —C(O)H,         —C(O)(C₁₋₄)alkyl, —CO₂H, —CO₂(C₁₋₄)alkyl, amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₄alkyl), cyano, (halo)₁₋₃,         hydroxy, nitro, aryl and heteroaryl (wherein aryl and heteroaryl         are optionally substituted with 1 to 5 substituents         independently selected from the group consisting of C₁₋₄alkyl,         cyano, halo, (halo)₁₋₃(C₁₋₄)alkyl, (halo)₁₋₃(C₁₋₄)alkoxy,         hydroxy, hydroxy(C₁₋₄)alkyl, hydroxy(C₁₋₄)alkoxy and nitro)},     -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,         heterocyclyl, aryl and heteroaryl are optionally substituted         with 1 to 3 substituents independently selected from the group         consisting of cyano, halo, hydroxy and nitro; and, wherein         cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally         substituted with 1 to 2 substituents independently selected from         the group consisting of:         -   C₁₋₄alkyl, C₂₋₄alkenyl (wherein alkyl and alkenyl are             optionally substituted on a terminal carbon with a             substituent selected from the group consisting of —C(O)H,             —C(O)(C₁₋₄)alkyl, —CO₂H, —CO₂(C₁₋₄)alkyl, amino (substituted             with two substituents independently selected from the group             consisting of hydrogen and C₁₋₄alkyl), cyano, (halo)₁₋₃,             hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and             heteroaryl),         -   —CH(OH)—(C₁₋₄)alkyl,         -   C₁₋₄alkoxy (optionally substituted on a terminal carbon with             a substituent selected from the group consisting of             (halo)₁₋₃ and hydroxy),         -   —C(O)H, —C(O)(C₁₋₄)alkyl, —CO₂H, —CO₂(C₁₋₄)alkyl,         -   amino (substituted with two substituents independently             selected from the group consisting of hydrogen, C₁₋₄alkyl             and —C(O)(C₁₋₄)alkyl),         -   —C(O)amino (wherein amino is substituted with two             substituents independently selected from the group             consisting of hydrogen and C₁₋₄alkyl),         -   —SO₂— {substituted with one substituent selected from the             group consisting of heterocyclyl and amino (wherein amino is             substituted with two substituents independently selected             from the group consisting of hydrogen, C₁₋₄alkyl and             —C₁₋₄alkylamino (wherein amino is substituted with two             substituents independently selected from the group             consisting of hydrogen and C₁₋₄alkyl))},         -   —NH—SO₂—(C₁₋₄)alkyl, cycloalkyl, heterocyclyl (optionally             substituted with 1 to 2 oxo substituents), aryl and             heteroaryl} and     -   amino {substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₄alkyl, cycloalkyl,         aryl and heteroaryl (wherein cycloalkyl, aryl and heteroaryl are         optionally substituted with 1 to 5 substituents independently         selected from the group consisting of C₁₋₄alkyl, cyano, halo,         (halo)₁₋₃(C₁₋₄)alkyl, (halo)₁₋₃(C₁₋₄)alkoxy, hydroxy,         hydroxy(C₁₋₄)alkyl, hydroxy(C₁₋₄)alkoxy and nitro)}.

More preferably, R₃ is selected from the group consisting of:

-   C₁₋₄alkyl, C₂₋₄alkenyl, C₂₋₄alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of amino (substituted     with two substituents independently selected from the group     consisting of hydrogen and C₁₋₄alkyl), cyano, (halo)₁₋₃, hydroxy,     nitro, aryl and heteroaryl (wherein aryl and heteroaryl are     optionally substituted with 1 to 5 substituents independently     selected from the group consisting of C₁₋₄alkyl, cyano, halo,     (halo)₁₋₃(C₁₋₄)alkyl, (halo)₁₋₃(C₁₋₄)alkoxy, hydroxy,     hydroxy(C₁₋₄)alkyl, hydroxy(C₁₋₄)alkoxy and nitro)}, -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl, aryl     and heteroaryl are optionally substituted with 1 to 3 substituents     independently selected from the group consisting of cyano, halo,     hydroxy and nitro; and, wherein cycloalkyl, heterocyclyl, aryl and     heteroaryl are optionally substituted with 1 to 2 substituents     independently selected from the group consisting of:     -   C₁₋₄alkyl, C₂₋₄alkenyl (wherein alkyl and alkenyl are optionally         substituted on a terminal carbon with a substituent selected         from the group consisting of —CO₂H, —CO₂(C₁₋₄)alkyl, amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₄alkyl), cyano,         (halo)₁₋₃, hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and         heteroaryl),     -   —CH(OH)—(C₁₋₄)alkyl,     -   C₁₋₄alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₄)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₄alkyl and         —C(O)(C₁₋₄)alkyl),     -   aryl and heteroaryl} and         amino {substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₄alkyl and aryl         (wherein aryl is optionally substituted with 1 to 5 substituents         independently selected from the group consisting of C₁₋₄alkyl,         cyano, halo, (halo)₁₋₃(C₁₋₄)alkyl, (halo)₁₋₃(C₁₋₄)alkoxy,         hydroxy, hydroxy(C₁₋₄)alkyl, hydroxy(C₁₋₄)alkoxy and nitro)}.

Most preferably, R₁ is selected from the group consisting of:

-   C₁₋₄alkenyl, C₂₋₄alkenyl, C₂₋₄alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of amino (substituted     with two substituents independently selected from the group     consisting of hydrogen and C₁₋₄alkyl), cyano, (halo)₁₋₃, hydroxy,     nitro, phenyl and thienyl (wherein phenyl and thienyl are optionally     substituted with 1 to 2 substituents independently selected from the     group consisting of C₁₋₄alkyl, cyano, halo, hydroxy and nitro)}, -   cyclopentyl, cyclohexyl, cycloheptyl, benzo[b]thienyl, phenyl,     furyl, thienyl, thiazolyl, isoxazolyl, thiadiazolyl, pyridinyl     {wherein cyclohexyl and phenyl are optionally substituted with 1 to     3 substituents independently selected from the group consisting of     cyano, halo, hydroxy and nitro; and, wherein cyclohexyl and phenyl     are optionally substituted with 1 to 2 substituents independently     selected from the group consisting of:     -   C₁₋₄alkyl (wherein alkyl is optionally substituted on a terminal         carbon with a substituent selected from the group consisting of         amino (substituted with two substituents independently selected         from the group consisting of hydrogen and C₁₋₄alkyl), cyano,         (halo)₁₋₃, hydroxy and nitro),     -   —CH(OH)—(C₁₋₄)alkyl,     -   C₁₋₄alkoxy,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen and C₁₋₄alkyl),         and wherein thienyl and thiazolyl are optionally substituted         with 1 to 3 substituents independently selected from the group         consisting of cyano, halo, hydroxy and nitro; and, wherein         thienyl and thiazolyl are optionally substituted with 1 to 2         substituents independently selected from the group consisting         of:     -   C₁₋₄alkyl (wherein alkyl is optionally substituted on a terminal         carbon with a substituent selected from the group consisting of         —CO₂H, —CO₂(C₁₋₄)alkyl, amino (substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₄alkyl), cyano, (halo)₁₋₃, hydroxy and nitro),     -   C₁₋₄alkoxy, —C(O)(C₁₋₄)alkyl, amino (substituted with two         substituents independently selected from the group consisting         of: hydrogen, C₁₋₄alkyl and —C(O)(C₁₋₄)alkyl),     -   pyrrolyl and pyridinyl;         and, wherein thiadiazolyl is optionally substituted with one         substituent selected from the group consisting of C₁₋₄alkyl         (wherein alkyl is optionally substituted on a terminal carbon         with a substituent selected from the group consisting of:     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen and C₁₋₄alkyl), cyano,         (halo)₁₋₃, hydroxy and nitro), C₁₋₄alkoxy, amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₄alkyl),     -   cyano, halo, hydroxy and nitro} and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₄alkyl and phenyl (wherein     phenyl is optionally substituted with 1 to 5 substituents     independently selected from the group consisting of C₁₋₄alkyl,     cyano, halo, hydroxy and nitro)}.

Embodiments of the present invention include compounds of Formula (I) selected from a compound of Formula (Ia):

wherein

-   R₄ is selected from the group consisting of: -   C₁₋₈alkyl {optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro,     cycloalkyl, heterocyclyl, aryl and heteroaryl}, -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a     substituent selected from the group consisting of (halo)₁₋₃ and     hydroxy), -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, -   amino (substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl and —SO₂—(C₁₋₈)alkyl), -   —C(O)amino (wherein amino is substituted with two substituents     independently selected from the group consisting of hydrogen and     C₁₋₈alkyl), -   —SO₂— {substituted with one substituent selected from the group     consisting of heterocyclyl and amino (wherein amino is substituted     with two substituents independently selected from the group     consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino (wherein amino is     substituted with two substituents independently selected from the     group consisting of hydrogen and C₁₋₈alkyl) and heteroaryl)}, -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 5 substituents independently selected from the group consisting     of C₁₋₈alkyl (wherein alkyl is optionally substituted on a terminal     carbon with a substituent selected from the group consisting of     amino (substituted with two substituents independently selected from     the group consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,     hydroxy and nitro), C₁₋₈alkoxy, amino (substituted with two     substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, halo, hydroxy and nitro; and,     wherein heterocyclyl is optionally substituted with 1 to 2 oxo     substituents}; -   R₂ is selected from the group consisting of hydrogen, C₁₋₈alkyl,     C₂₋₈alkenyl, C₂₋₈alkynyl and hydroxy(C₁₋₈)alkyl; -   X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—;     and, -   R₃ is selected from the group consisting of: -   C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, aryl and     heteroaryl (wherein aryl and heteroaryl are optionally substituted     with 1 to 5 substituents independently selected from the group     consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}, -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 3 substituents independently selected from the group consisting     of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 2 substituents independently selected from the group consisting     of:     -   C₁₋₈ alkyl, C₂₋₈alkenyl (wherein alkyl and alkenyl are         optionally substituted on a terminal carbon with a substituent         selected from the group consisting of     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₈alkyl), cyano,         (halo)₁₋₃, hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and         heteroaryl),     -   —CH(OH)—(C₁₋₈)alkyl,     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —C(O)(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl))},     -   —NH—SO₂—(C₁₋₈)alkyl, cycloalkyl, heterocyclyl (optionally         substituted with 1 to 2 oxo substituents), aryl and heteroaryl}         and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl, cycloalkyl, aryl and     heteroaryl (wherein cycloalkyl, aryl and heteroaryl are optionally     substituted with 1 to 5 substituents independently selected from the     group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}; -   and pharmaceutically acceptable salts thereof.

Embodiments of the present invention include compounds of Formula (I) selected from a compound of Formula (Ib):

wherein

-   R₄ is selected from the group consisting of: -   C₁₋₈alkyl {optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro,     cycloalkyl, heterocyclyl, aryl and heteroaryl}, -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a     substituent selected from the group consisting of (halo)₁₋₃ and     hydroxy), -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, -   amino (substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl and —SO₂—(C₁₋₈)alkyl), -   —C(O)amino (wherein amino is substituted with two substituents     independently selected from the group consisting of hydrogen and     C₁₋₈alkyl), -   —SO₂— {substituted with one substituent selected from the group     consisting of heterocyclyl and amino (wherein amino is substituted     with two substituents independently selected from the group     consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino (wherein amino is     substituted with two substituents independently selected from the     group consisting of hydrogen and C₁₋₈alkyl) and heteroaryl)}, -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 5 substituents independently selected from the group consisting     of C₁₋₈alkyl (wherein alkyl is optionally substituted on a terminal     carbon with a substituent selected from the group consisting of     amino (substituted with two substituents independently selected from     the group consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,     hydroxy and nitro), C₁₋₈alkoxy, amino (substituted with two     substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, halo, hydroxy and nitro; and,     wherein heterocyclyl is optionally substituted with 1 to 2 oxo     substituents}; -   R₂ is selected from the group consisting of hydrogen, C₁₋₈alkyl,     C₂₋₈alkenyl, C₂₋₈alkynyl and hydroxy(C₁₋₈)alkyl; -   X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—;     and, -   R₃ is selected from the group consisting of: -   C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, aryl and     heteroaryl (wherein aryl and heteroaryl are optionally substituted     with 1 to 5 substituents independently selected from the group     consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}, -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 3 substituents independently selected from the group consisting     of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 2 substituents independently selected from the group consisting     of:     -   C₁₋₈alkyl, C₂₋₈alkenyl (wherein alkyl and alkenyl are optionally         substituted on a terminal carbon with a substituent selected         from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H,         —CO₂(C₁₋₈)alkyl, amino (substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, cycloalkyl,         heterocyclyl, aryl and heteroaryl),     -   —CH(OH)—(C₁₋₈)alkyl,     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —C(O)(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl))},     -   —NH—SO₂—(C₁₋₈)alkyl,     -   cycloalkyl, heterocyclyl (optionally substituted with 1 to 2 oxo         substituents), aryl and heteroaryl} and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl, cycloalkyl, aryl and     heteroaryl (wherein cycloalkyl, aryl and heteroaryl are optionally     substituted with 1 to 5 substituents independently selected from the     group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}; -   and pharmaceutically acceptable salts thereof.

Embodiments of the present invention include compounds of Formula (I) selected from a compound of Formula (Ic):

wherein

-   R₄ is selected from the group consisting of: -   C₁₋₈alkyl {optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro,     cycloalkyl, heterocyclyl, aryl and heteroaryl}, -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a     substituent selected from the group consisting of (halo)₁₋₃ and     hydroxy), -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, -   amino (substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl and —SO₂—(C₁₋₈)alkyl), -   —C(O)amino (wherein amino is substituted with two substituents     independently selected from the group consisting of hydrogen and     C₁₋₈alkyl), -   —SO₂— {substituted with one substituent selected from the group     consisting of heterocyclyl and amino (wherein amino is substituted     with two substituents independently selected from the group     consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino (wherein amino is     substituted with two substituents independently selected from the     group consisting of hydrogen and C₁₋₈alkyl) and heteroaryl)}, -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 5 substituents independently selected from the group consisting     of C₁₋₈alkyl (wherein alkyl is optionally substituted on a terminal     carbon with a substituent selected from the group consisting of     amino (substituted with two substituents independently selected from     the group consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,     hydroxy and nitro), C₁₋₈alkoxy, amino (substituted with two     substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, halo, hydroxy and nitro; and,     wherein heterocyclyl is optionally substituted with 1 to 2 oxo     substituents}; -   R₂ is selected from the group consisting of hydrogen, C₁₋₈alkyl,     C₂₋₈alkenyl, C₂₋₈alkynyl and hydroxy(C₁₋₈)alkyl; -   X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—;     and, -   R₃ is selected from the group consisting of: -   C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, aryl and     heteroaryl (wherein aryl and heteroaryl are optionally substituted     with 1 to 5 substituents independently selected from the group     consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}, -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 3 substituents independently selected from the group consisting     of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 2 substituents independently selected from the group consisting     of:     -   C₁₋₈alkyl, C₂₋₈alkenyl (wherein alkyl and alkenyl are optionally         substituted on a terminal carbon with a substituent selected         from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H,         —CO₂(C₁₋₈)alkyl, amino (substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, cycloalkyl,         heterocyclyl, aryl and heteroaryl),     -   —CH(OH)—(C₁₋₈)alkyl,     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —C(O)(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl))},     -   —NH—SO₂—(C₁₋₈)alkyl, cycloalkyl, heterocyclyl (optionally         substituted with 1 to 2 oxo substituents), aryl and heteroaryl}         and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl, cycloalkyl, aryl and     heteroaryl (wherein cycloalkyl, aryl and heteroaryl are optionally     substituted with 1 to 5 substituents independently selected from the     group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}; -   and pharmaceutically acceptable salts thereof.

Embodiments of the present invention include compounds of Formula (Ic) wherein, preferably, R₄ is selected from the group consisting of:

-   amino (substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₄alkyl and —SO₂—(C₁₋₄)alkyl), -   —SO₂— {substituted with one substituent selected from the group     consisting of heterocyclyl and amino (wherein amino is substituted     with two substituents independently selected from the group     consisting of hydrogen, C₁₋₄alkyl, —C₁₋₄alkylamino (wherein amino is     substituted with two substituents independently selected from the     group consisting of hydrogen and C₁₋₄alkyl) and heteroaryl)}, -   heterocyclyl (wherein heterocyclyl is optionally substituted with 1     to 2 substituents independently selected from the group consisting     of C₁₋₄alkyl and oxo) and heteroaryl.

Embodiments of the present invention include compounds of Formula (I) selected from a compound of Formula (Id):

wherein

-   R₄ is selected from the group consisting of: -   C₁₋₈alkyl {optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro,     cycloalkyl, heterocyclyl, aryl and heteroaryl}, -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a     substituent selected from the group consisting of (halo)₁₋₃ and     hydroxy), -   —C(O)H, —C(O)(C₁₋₈)alkyl, —C₂H, —CO₂(C₁₋₈)alkyl, -   amino (substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl and —SO₂—(C₁₋₈)alkyl), -   —C(O)amino (wherein amino is substituted with two substituents     independently selected from the group consisting of hydrogen and     C₁₋₈alkyl), -   —SO₂— {substituted with one substituent selected from the group     consisting of heterocyclyl and amino (wherein amino is substituted     with two substituents independently selected from the group     consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino (wherein amino is     substituted with two substituents independently selected from the     group consisting of hydrogen and C₁₋₈alkyl) and heteroaryl)}, -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 5 substituents independently selected from the group consisting     of C₁₋₈alkyl (wherein alkyl is optionally substituted on a terminal     carbon with a substituent selected from the group consisting of     amino (substituted with two substituents independently selected from     the group consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,     hydroxy and nitro), C₁₋₈alkoxy, amino (substituted with two     substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, halo, hydroxy and nitro; and,     wherein heterocyclyl is optionally substituted with 1 to 2 oxo     substituents}; -   R₂ is selected from the group consisting of hydrogen, C₁₋₈alkyl,     C₂₋₈alkenyl, C₂₋₈alkynyl and hydroxy(C₁₋₈)alkyl; -   X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—;     and, -   R₃ is selected from the group consisting of: -   C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, aryl and     heteroaryl (wherein aryl and heteroaryl are optionally substituted     with 1 to 5 substituents independently selected from the group     consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}, -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 3 substituents independently selected from the group consisting     of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 2 substituents independently selected from the group consisting     of:     -   C₁₋₈alkyl, C₂₋₈alkenyl (wherein alkyl and alkenyl are optionally         substituted on a terminal carbon with a substituent selected         from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H,         —CO₂(C₁₋₈)alkyl, amino (substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, cycloalkyl,         heterocyclyl, aryl and heteroaryl),     -   —CH(OH)—(C₁₋₈)alkyl,     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —C(O)(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl))},     -   —NH—SO₂—(C₁₋₈)alkyl,     -   cycloalkyl, heterocyclyl (optionally substituted with 1 to 2 oxo         substituents), aryl and heteroaryl} and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl, cycloalkyl, aryl and     heteroaryl (wherein cycloalkyl, aryl and heteroaryl are optionally     substituted with 1 to 5 substituents independently selected from the     group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}; -   and pharmaceutically acceptable salts thereof.

Embodiments of the present invention include compounds of Formula (I) selected from a compound of Formula (Ie):

wherein

-   R₁ is selected from the group consisting of C₁₋₈alkyl, -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein heterocyclyl     is optionally substituted with 1 to 2 oxo substituents; and, wherein     cycloalkyl, heterocyclyl, aryl and heteroaryl are substituted with a     substituent selected from the group consisting of:     -   C₁₋₈alkyl (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of —C(O)H,         —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃,         hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and heteroaryl),     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —SO₂—(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl) and heteroaryl)},     -   cycloalkyl, heterocyclyl, aryl and heteroaryl {wherein         cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally         substituted with 1 to 3 substituents independently selected from         the group consisting of cyano, halo, hydroxy and nitro; wherein         heterocyclyl is optionally substituted with 1 to 2 oxo         substituents; and, wherein cycloalkyl, heterocyclyl, aryl and         heteroaryl are optionally substituted with a substituent         selected from the group consisting of C₁₋₈alkyl (wherein alkyl         is optionally substituted on a terminal carbon with a         substituent selected from the group consisting of amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₈alkyl), cyano,         (halo)₁₋₃, hydroxy and nitro), C₁₋₈alkoxy and amino (substituted         with two substituents independently selected from the group         consisting of hydrogen and C₁₋₈alkyl)}}; and, -   R₃ is selected from the group consisting of: -   C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl {wherein alkyl, alkenyl and     alkynyl are optionally substituted on a terminal carbon with a     substituent selected from the group consisting of —C(O)H,     —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino (substituted with     two substituents independently selected from the group consisting of     hydrogen and C₁₋₈alkyl), cyano, (halo)₁₋₃, hydroxy, nitro, aryl and     heteroaryl (wherein aryl and heteroaryl are optionally substituted     with 1 to 5 substituents independently selected from the group     consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}, -   cycloalkyl, heterocyclyl, aryl, heteroaryl {wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 3 substituents independently selected from the group consisting     of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl,     heterocyclyl, aryl and heteroaryl are optionally substituted with 1     to 2 substituents independently selected from the group consisting     of:     -   C₁₋₈alkyl, C₂₋₈alkenyl (wherein alkyl and alkenyl are optionally         substituted on a terminal carbon with a substituent selected         from the group consisting of     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino         (substituted with two substituents independently selected from         the group consisting of hydrogen and C₁₋₈alkyl), cyano,         (halo)₁₋₃, hydroxy, nitro, cycloalkyl, heterocyclyl, aryl and         heteroaryl),     -   —CH(OH)—(C₁₋₈)alkyl,     -   C₁₋₈alkoxy (optionally substituted on a terminal carbon with a         substituent selected from the group consisting of (halo)₁₋₃ and         hydroxy),     -   —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl,     -   amino (substituted with two substituents independently selected         from the group consisting of hydrogen, C₁₋₈alkyl and         —C(O)(C₁₋₈)alkyl),     -   —C(O)amino (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl),     -   —SO₂— {substituted with one substituent selected from the group         consisting of heterocyclyl and amino (wherein amino is         substituted with two substituents independently selected from         the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino         (wherein amino is substituted with two substituents         independently selected from the group consisting of hydrogen and         C₁₋₈alkyl))},     -   —NH—SO₂—(C₁₋₈)alkenyl,     -   cycloalkyl, heterocyclyl (optionally substituted with 1 to 2 oxo         substituents), aryl and heteroaryl} and -   amino {substituted with two substituents independently selected from     the group consisting of hydrogen, C₁₋₈alkyl, cycloalkyl, aryl and     heteroaryl (wherein cycloalkyl, aryl and heteroaryl are optionally     substituted with 1 to 5 substituents independently selected from the     group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl,     (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl,     hydroxy(C₁₋₈)alkoxy and nitro)}; -   and pharmaceutically acceptable salts thereof.

Exemplified compounds of the present invention include a compound of Formula (I) selected from a compound of Formula (Ic):

wherein X, R₂, R₃ and R₄ are dependently selected from:

Cpd X R₂ R₃ R₄ 1 C(O) H (2,6-F₂)Ph 4-SO₂—NH₂ 2 C(O) H (2,6-F₂-3-CH₃)Ph 4-SO₂—NH₂ 3 C(O) H (2,4,6-F₃)Ph 4-SO₂—NH₂ 4 C(O) H (2-F)Ph 4-SO₂—NH₂ 5 C(O) H (2,4-F₂)Ph 4-SO₂—NH₂ 6 C(O) H (2-F-6-CF₃)Ph 4-SO₂—NH₂ 7 C(O) H (2,6-Cl₂)Ph 4-SO₂—NH₂ 8 C(O) H (2,4,6-Cl₃)Ph 4-SO₂—NH₂ 9 C(O) H (2-NO₂)Ph 4-SO₂—NH₂ 10 C(O) H [2,6-(OCH₃)₂]Ph 4-SO₂—NH₂ 11 C(O) H [2,4,6-(CH₃)₃]Ph 4-SO₂—NH₂ 12 C(O) H Ph 4-SO₂—NH₂ 13 C(O) H (2,6-F₂)Ph 4-SO₂-1-H-piperidin-1-yl 14 C(O) H 2-thienyl 4-SO₂—NH₂ 15 C(O) H (3-CH₃)2-thienyl 4-SO₂—NH₂ 16 C(O) H (3-F)2-thienyl 4-SO₂—NH₂ 17 C(O) H (3-Cl)2-thienyl 4-SO₂—NH₂ 18 C(O) H (3-OCH₂CH₃)2-thienyl 4-SO₂—NH₂ 19 C(O) H (3-NHCOCH₃)2-thienyl 4-SO₂—NH₂ 20 C(O) H (5-CH₃)2-thienyl 4-SO₂—NH₂ 21 C(O) H (5-Br)2-thienyl 4-SO₂—NH₂ 22 C(O) H (5-COCH₃)2-thienyl 4-SO₂—NH₂ 23 C(O) H 2-thienyl 4-SO₂-1-H-piperidin-1-yl 24 C(O) H (3-CH₃)2-thienyl 4-SO₂-1-H-piperidin-1-yl 25 C(O) H 2-furyl 4-SO₂—NH₂ 26 C(O) H 5-isoxazolyl 4-SO₂—NH₂ 27 C(O) H 2-pyridinyl 4-SO₂—NH₂ 28 C(O) H 3-pyridinyl 4-SO₂—NH₂ 29 C(O) H 4-pyridinyl 4-SO₂—NH₂ 30 C(O) H 3-thienyl 4-SO₂—NH₂ 31 C(O) H 3a,7a- 4-SO₂—NH₂ dihydrobenzo[b]thien-2-yl 32 C(O) H (5-CH₂CH₃)2-thienyl 4-SO₂—NH₂ 33 C(O) H [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH₂ 34 C(O) H [2,4-(CH₃)₂]5-thiazolyl 4-SO₂—NH₂ 35 C(O) H (3-Br)2-thienyl 4-SO₂—NH₂ 36 C(O) H 4-(CH₃)-1,2,3-thiadiazol-5-yl 4-SO₂—NH₂ 37 C(O) H 1,2,3-thiadiazol-4-yl 4-SO₂—NH₂ 38 C(O) H cyclopentyl 4-SO₂—NH₂ 39 C(O) H cyclohexyl 4-SO₂—NH₂ 40 C(O) H 2-thienyl-CH₂ 4-SO₂—NH₂ 42 C(O) H 2-thienyl-(CH)₂ 4-SO₂—NH₂ 43 C(O) H (2,6-F₂)—Ph—CH₂ 4-SO₂—NH₂ 44 C(O) H (2,6-F₂)Ph(CH)₂ 4-SO₂—NH₂ 45 C(O) H cycloheptyl 4-SO₂—NH₂ 46 C(O) H 4-CH₃-cyclohexyl 4-SO₂—NH₂ 47 C(O) H 4-CH₃-cyclohexyl 4-SO₂—NH₂ 48 C(O) H 4-(CH₂)₃CH₃-cyclohexyl 4-SO₂—NH₂ 49 C(O) H 5-(2-pyridinyl)2-thienyl 4-SO₂—NH₂ 50 C(O) H 3-(1H-pyrrol-1-yl)2-thienyl 4-SO₂—NH₂ 51 C(O) H 5-[C(CH₃)₃]2-thienyl 4-SO₂—NH₂ 52 C(O) H 5-[(CH)₂C(O)OC(CH₃)₃]2- 4-SO₂—NH₂ thienyl 53 C(O) H Ph(C)₂ 4-SO₂—NH₂ 54 C(O) H (2,6-F₂-3-NO₂)Ph 4-SO₂—NH₂ 55 C(O) H (2,6-F₂-3-NH₂)Ph 4-SO₂—NH₂ 56 C(O) H [2,6-(CH₃)₂]Ph 4-SO₂—NH₂ 57 C(O) H (2-CH₃)Ph 4-SO₂—NH₂ 58 C(O) H [2,6-F₂-3-CH(OH)CH₃]Ph 4-SO₂—NH₂ 59 C(O) H (2,6-F₂)Ph 4-SO₂—NH₂ 60 C(O) H (2,6-F₂-3-CH₃)Ph 4-SO₂—NH₂ 61 C(O) H (2,6-F₂)Ph H 62 C(O) H Ph H 63 C(O) H (2,6-F₂)Ph 3-Cl 64 C(O) H Ph 3-Cl 65 C(O) H —NH(Ph) H 66 C(S) H —NH[(2,6-F₂)Ph] 4-SO₂—NH₂ 67 C(O) H —NH[(2,6-F₂)Ph] 4-SO₂—NH₂ 68 SO₂ H (2,6-F₂)Ph 4-SO₂—NH₂ 69 C(O) H (2-Cl-3-CH₃-6-F)Ph 4-SO₂—NH₂ 70 C(O) H (2-Cl-6-F)Ph 4-SO₂—NH₂ 71 C(O) H (2,6-F₂)Ph 4-(4-CH₃-1,4-H- piperazin-1-yl) 72 C(O) H (2,6-F₂-3-CH₃)Ph 4-(4-CH₃-1,4-H- piperazin-1-yl) 73 C(O) H (3-CH₃)2-thienyl 4-(4-CH₃-1,4-H- piperazin-1-yl) 74 C(O) H [3,5-(CH₃)₂]2-thienyl 4-(4-CH₃-1,4-H- piperazin-1-yl) 75 C(O) H (5-CH₂CH₃)2-thienyl 4-(4-CH₃-1,4-H- piperazin-1-yl) 76 C(O) H (2,6-F₂)Ph 4-SO₂—NH(CH₂CH₃) 78 C(O) H (2,6-F₂-5-Cl)Ph 4-SO₂—NH₂ 80 C(O) H (2,6-F₂)Ph 4-SO₂—NH(CH₃) 81 C(O) H (2,6-F₂-3-CH₃)Ph 4-SO₂—NH(CH₃) 82 C(O) H (3-CH₃)2-thienyl 4-SO₂—NH(CH₃) 83 C(O) H [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH(CH₃) 84 C(O) H (5-CH₂CH₃)2-thienyl 4-SO₂—NH(CH₃) 85 C(O) H [3,5-(CH₃)₂]2-thienyl 4-SO₂—N(CH₃)₂ 86 C(O) H (5-CH₂CH₃)2-thienyl 4-SO₂—N(CH₃)₂ 87 C(O) H (3-CH₃)2-thienyl 4-SO₂—N(CH₃)₂ 88 C(O) H (2,6-F₂-3-CH₃)Ph 4-SO₂—N(CH₃)₂ 89 C(O) H (2,6-F₂)Ph 4-SO₂—N(CH₃)₂ 90 C(O) H (5-CH₂CH₃)2-thienyl 4-(1-H-imidazol-1-yl) 91 C(O) H (3-CH₃)2-thienyl 4-(1-H-imidazol-1-yl) 92 C(O) H [3,5-(CH₃)₂]2-thienyl 4-(1-H-imidazol-1-yl) 93 C(O) H (2,6-F₂)Ph 4-(1-H-imidazol-1-yl) 94 C(O) H (2,6-F₂-3-CH₃)Ph 4-(1-H-imidazol-1-yl) 95 C(O) H (2,6-F₂-3-CH₃)Ph 4-(1-H-1,2,4-triazol-1-yl) 96 C(O) H (2,6-F₂)Ph 4-(1-H-1,2,4-triazol-1-yl) 97 C(O) H (5-CH₂CH₃)2-thienyl 4-(1-H-1,2,4-triazol-1-yl) 98 C(O) H [3,5-(CH₃)₂]2-thienyl 4-(1-H-1,2,4-triazol-1-yl) 99 C(O) H (3-CH₃)2-thienyl 4-(1-H-1,2,4-triazol-1-yl) 100 C(O) H (2,6-F₂)Ph 4-(1-H-1,3,4-triazol-1-yl) 101 C(O) H (2,6-F₂-3-CH₃)Ph 4-(1-H-1,3,4-triazol-1-yl) 102 C(O) H (3-CH₃)2-thienyl 4-(1-H-1,3,4-triazol-1-yl) 103 C(O) H (5-CH₂CH₃)2-thienyl 4-SO₂—NH[(CH₂)₂N(CH₃)₂] 104 C(O) H (3-CH₃)2-thienyl 4-SO₂—NH[(CH₂)₂N(CH₃)₂] 105 C(O) H (2,6-F₂-3-CH₃)Ph 4-SO₂—NH[(CH₂)₂N(CH₃)₂] 106 C(O) H (2,6-F₂)Ph 4-SO₂—NH[(CH₂)₂N(CH₃)₂] 107 C(O) H [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH[(CH₂)₂N(CH₃)₂] 108 C(O) H [3,5-(CH₃)₂]2-thienyl 4-NH—SO₂—CH₃ 109 C(O) H (3-CH₃)2-thienyl 4-NH—SO₂—CH₃ 110 C(O) H (5-CH₂CH₃)2-thienyl 4-NH—SO₂—CH₃ 111 C(O) H (2,6-F₂)Ph 4-NH—SO₂—CH₃ 112 C(O) H (2,6-F₂-3-CH₃)Ph 4-NH—SO₂—CH₃ 113 C(O) H (3-CH₃)2-thienyl 4-(2-imidazolidinone) 114 C(O) H (2,6-F₂-3-CH₃)Ph 4-(2-imidazolidinone) 115 C(O) H (2,6-F₂)Ph 4-(2-imidazolidinone) 116 C(O) H (3-CH₃)2-thienyl 4-(1,1-dioxido-2- isothiazolidinyl) 117 C(O) H (2,6-F₂)Ph 4-(1,1-dioxido-2- isothiazolidinyl) 118 C(O) H (2,6-F₂)Ph 4-SO₂—NH-2-pyridinyl 119 C(O) H (5-CH₂CH₃)2-thienyl 4-SO₂—NH-2-pyridinyl 120 C(O) H [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH-2-pyridinyl and, 121 C(O) H (3-CH₃)2-thienyl 4-SO₂—NH-2-pyridinyl and pharmaceutically acceptable salts thereof.

Exemplified compounds of the present invention include a compound of Formula (I) selected from a compound of Formula (Id):

wherein X, R₃ and R₄ are dependently selected from:

Cpd X R₃ R₄ 122 C(O) (2,6-F₂)Ph 4-SO₂—NH₂ 123 C(O) (2,6-F₂-3-CH₃)Ph 4-SO₂—NH₂ 124 C(O) (2,6-F₂)Ph H 125 C(O) Ph H 126 C(O) (2,6-F₂)Ph 3-Cl 127 C(O) Ph 3-Cl and, 128 C(S) —NH[(2,6-F₂)Ph] 4-SO₂—NH₂ and pharmaceutically acceptable salts thereof.

Exemplified compounds of the present invention include a compound of Formula (I) selected from a compound of Formula (Ie):

wherein R₁ and R₃ are dependently selected from:

Cpd R₁ R₃ 79 CH₃ (3-CH₃)2-thienyl and pharmaceutically acceptable salts thereof.

The compounds of the present invention may also be present in the form of pharmaceutically acceptable salts. For use in medicine, the salts of the compounds of this invention refer to non-toxic “pharmaceutically acceptable salts” (Ref. International J. Pharm., 1986, 33, 201-217; J. Pharm.Sci., 1997 (January), 66, 1, 1). Other salts may, however, be useful in the preparation of compounds according to this invention or of their pharmaceutically acceptable salts. Representative organic or inorganic acids include, but are not limited to, hydrochloric, hydrobromic, hydriodic, perchloric, sulfuric, nitric, phosphoric, acetic, propionic, glycolic, lactic, succinic, maleic, fumaric, malic, tartaric, citric, benzoic, mandelic, methanesulfonic, hydroxyethanesulfonic, benezenesulfonic, oxalic, pamoic, 2-naphthalenesulfonic, p-toluenesulfonic, cyclohexanesulfamic, salicylic, saccharinic or trifluoroacetic acid. Representative organic or inorganic bases include, but are not limited to, basic or cationic salts such as benzathine, chloroprocaine, choline, diethanolamine, ethylenediamine, meglumine, procaine, aluminum, calcium, lithium, magnesium, potassium, sodium and zinc.

The present invention includes within its scope prodrugs of the compounds of this invention. In general, such prodrugs will be functional derivatives of the compounds, which are readily convertible in vivo into the required compound. Thus, in the methods of treatment of the present invention, the term “administering” shall encompass the treatment of the various disorders described with the compound specifically disclosed or with a compound which may not be specifically disclosed, but which converts to the specified compound in vivo after administration to the subject. Conventional procedures for the selection and preparation of suitable prodrug derivatives are described, for example, in “Design of Prodrugs”, ed. H. Bundgaard, Elsevier, 1985.

Where the compounds according to this invention have at least one chiral center, they may accordingly exist as enantiomers. Where the compounds possess two or more chiral centers, they may additionally exist as diastereomers. Where the processes for the preparation of the compounds according to the invention give rise to mixture of stereoisomers, these isomers may be separated by conventional techniques such as preparative chromatography. The compounds may be prepared in racemic form or individual enantiomers may be prepared by standard techniques known to those skilled in the art, for example, by enantiospecific synthesis or resolution, formation of diastereomeric pairs by salt formation with an optically active acid, followed by fractional crystallization and regeneration of the free base. The compounds may also be resolved by formation of diastereomeric esters or amides, followed by chromatographic separation and removal of the chiral auxiliary. Alternatively, the compounds may be resolved using a chiral HPLC column. It is to be understood that all such isomers and mixtures thereof are encompassed within the scope of the present invention and moreover that the term “a compound of Formula x” will encompass a compound's enantiomers, diastereomers, and the like.

Unless specified otherwise, the term “alkyl” refers to a saturated straight or branched chain consisting solely of 1-8 hydrogen substituted carbon atoms; preferably, 1-6 hydrogen substituted carbon atoms; and, most preferably, 1-4 hydrogen substituted carbon atoms. The term “alkenyl” refers to a partially unsaturated straight or branched alkyl chain that contains at least one double bond. The term “alkynyl” refers to a partially unsaturated straight or branched alkyl chain that contains at least one triple bond. The term “alkoxy” refers to —O-alkyl, where alkyl is as defined supra.

The term “cycloalkyl” refers to a saturated or partially unsaturated cyclic alkyl ring consisting of 3-8 hydrogen substituted carbon atoms. Examples include, and are not limited to, cyclopropyl, cyclopentyl, cyclohexyl or cycloheptyl.

The term “heterocyclyl” refers to a saturated or partially unsaturated ring having five members of which at least one member is a N, O or S atom and which optionally contains one additional O atom or one, two or three additional N atoms; a saturated or partially unsaturated ring having six members of which one, two or three members are a N atom; a saturated or partially unsaturated bicyclic ring having nine members of which at least one member is a N, O or S atom and which optionally contains one, two or three additional N atoms; and, a saturated or partially unsaturated bicyclic ring having ten members of which one, two or three members are a N atom. Examples include, and are not limited to, pyrrolinyl, pyrrolidinyl, dioxolanyl, imidazolinyl, imidazolidinyl, pyrazolinyl, pyrazolidinyl, piperidinyl, morpholinyl or piperazinyl.

The term “aryl” refers to an aromatic monocyclic ring system containing 6 hydrogen substituted carbon atoms, an aromatic bicyclic ring system containing 10 hydrogen substituted carbon atoms or an aromatic tricyclic ring system containing 14 hydrogen substituted carbon atoms. Examples include, and are not limited to, phenyl, naphthalenyl or anthracenyl.

The term “heteroaryl” refers to an aromatic monocyclic ring system containing five members of which at least one member is a N, O or S atom and which optionally contains one, two or three additional N atoms, an aromatic monocyclic ring having six members of which one, two or three members are a N atom, an aromatic bicyclic ring having nine members of which at least one member is a N, O or S atom and which optionally contains one, two or three additional N atoms and an aromatic bicyclic ring having ten members of which one, two or three members are a N atom. Examples include, and are not limited to, furyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, pyrazolyl, isoxazolyl, isothiazolyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, indolyl, indazolyl, quinolinyl or isoquinolinyl.

The term “halo” or “halogen” refers to a fluoro, chloro, bromo or iodo atom.

“Independently” means that when a group is substituted with more than one substituent that the substituents may be the same or different. “Dependently” means that the substituents are specified in an indicated combination of structure variables.

An embodiment of the invention is a pharmaceutical composition or medicament comprising a pharmaceutically acceptable carrier and any of the compounds described above. Illustrative of the invention is a pharmaceutical composition or medicament made by mixing any of the compounds described above and a pharmaceutically acceptable carrier. Another illustration of the invention is a process for making a pharmaceutical composition or medicament comprising mixing any of the compounds described above and a pharmaceutically acceptable carrier. Further illustrative of the present invention are pharmaceutical compositions or medicaments comprising one or more compounds of this invention in association with a pharmaceutically acceptable carrier.

As used herein, the term “composition” is intended to encompass a product comprising the specified ingredients in the specified amounts, as well as any product which results, directly or indirectly, from combinations of the specified ingredients in the specified amounts.

The compounds of the present invention are selective kinase or dual-kinase inhibitors useful in a method for treating or ameliorating a kinase or dual-kinase mediated disorder. In particular, the kinase is selected from a cyclin dependent kinase and a tyrosine kinase. More particularly, the kinase is selected from cyclin dependent kinase-1, cyclin dependent kinase-2, cyclin dependent kinase-4, vascular endothelial growth factor receptor-2, endothelial growth factor receptor or human epidermal growth factor receptor-2.

Cyclin-dependent kinase inhibitors play a critical role in regulating progression of the eukaryotic cell through the cell cycle by associating with protein complexes composed of cyclins and cyclin-dependent kinases and thus down-regulating the activity of the cyclin-dependent kinases. Pathways involving cyclin-dependent kinase inhibitors are frequently disrupted in tumor cells leading to abnormal regulation of the cell cycle. Overexpression of cyclin-dependent kinase inhibitors leads to arrest of cells at one of the check points in the cell cycle. Therefore, using cyclin-dependent kinase inhibitors for tumor therapy is intuitively attractive because it has the potential for tumour growth. Inhibition or for the inhibition or control of uncontrolled cell proliferation such as occurs in some angiopathies, benign tumor growth, leukemias, and the like. A particularly good CDK inhibitor target for the design of anti-tumor agents is the CDK-1 receptor. This protein controls the last checkpoint in the cell cycle between the G2 and M phase.

A second protein target that can facilitate elimination of a tumor is the tyrosine kinase vascular endothelial growth factor (VEGF) receptor. This protein is associated with both normal and pathological angiogenesis. The VEGF receptors are tripartite, consisting of an extracellular ligand-binding domain, a transmembrane domain and an intracellular tyrosine kinase domain. Presently there are two known VEGF receptors: (1) VEGF-R2 (KDR/Flk1/VEGF-R2), a receptor that mediates the biological activities of mitogenesis and proliferation of endothelial cells; and (2) VEGF-R1 (Flt1/VEGF-R1), a receptor that mediates functions such as endothelial cell adhesion. Inhibition of VEGF-R2 signalling has been shown to inhibit the process of angiogenesis. Inhibitors of this receptor are likely useful in controlling or limiting angiogenesis.

Many conventional cytotoxic cancer therapies destroy the rapidly dividing epithelium of the hair follicle and induce alopecia (hair loss). Inhibition of cyclin dependent kinases may represent a therapeutic strategy for prevention of chemotherapy-induced alopecia by arresting the cell cycle and reducing the sensitivity of epithelial cells to antitumor agents (Davis S. T., etal., Prevention of chemotherapy-induced alopecia in rats by CDK inhibitors, Science, 2001, (January 5), 291, 5501, 25-6). Topical application of non-apoptotic CDK inhibitors represents a potentially useful approach for the prevention of chemotherapy-induced alopecia in cancer patients.

Although coronary angioplasty is a highly effective procedure used to reduce the severity of coronary occlusion, its long-term success is limited by a high rate of restenosis. Vascular smooth muscle cell activation, migration, and proliferation is largely responsible for restenosis following angioplasty (Ross, R., Nature, 1993, 362, 801-809). Recent studies have shown that CDK2 is activated very early after endothelial denudation in a rat carotid artery model of restenosis (Wei, G. L., et al., Circ. Res., 1997, 80, 418-426). Therefore, antiproliferative therapies targeted to cyclin dependent kinases or other components of the cell cycle machinery may be a suitable approach to treat these disorders.

Embodiments of the method of the present invention include a method for treating or ameliorating a selective kinase or dual-kinase mediated disorder in a subject in need thereof comprising administering to the subject a therapeutically effective amount of an instant compound or pharmaceutical composition thereof. The therapeutically effective amount of the compounds of Formula (I) exemplified in such a method is from about 0.001 mg/kg/day to about 300 mg/kg/day.

Embodiments of the present invention include the use of a compound of Formula (I) for the preparation of a medicament for treating or ameliorating a kinase or dual-kinase mediated disorder in a subject in need thereof.

In accordance with the methods of the present invention, an individual compound of the present invention or a pharmaceutical composition thereof can be administered separately at different times during the course of therapy or concurrently in divided or single combination forms. The instant invention is therefore to be understood as embracing all such regimes of simultaneous or alternating treatment and the term “administering” is to be interpreted accordingly.

Embodiments of the present method include a compound or pharmaceutical composition thereof advantageously co-administered in combination with other agents for treating or ameliorating a kinase or dual-kinase mediated disorder. The combination product comprises co-administration of a compound of Formula (I) or pharmaceutical composition thereof and an additional agent for treating or ameliorating a kinase or dual-kinase mediated disorder, the sequential administration of a compound of Formula (I) or pharmaceutical composition thereof and an additional agent for treating or ameliorating a kinase or dual-kinase mediated disorder, administration of a pharmaceutical composition containing a compound of Formula (I) or pharmaceutical composition thereof and an additional agent for treating or ameliorating a kinase or dual-kinase mediated disorder or the essentially simultaneous administration of a separate pharmaceutical composition containing a compound of Formula (I) or pharmaceutical composition thereof and a separate pharmaceutical composition containing an additional agent for treating or ameliorating a kinase or dual-kinase mediated disorder.

The term “other agents” includes, and is not limited to, anti-angiogenic agents, anti-tumor agents, cytotoxic agents, inhibitors of cell proliferation, and the like. The term “treating or ameliorating” includes, and is not limited to, facilitating the eradication of, inhibiting the progression of or promoting stasis of a malignancy. For example, a dual CDK1-VEGF-R inhibitor compound of the present invention, acting as an anti-angiogenic agent can be administered in a dosing regimen with at least one other cytotoxic compound, such as a DNA alkylating agent. Preferred anti-tumor agents are selected from the group consisting of cladribine (2-chloro-2′-deoxy-(beta)-D-adenosine), Chlorambucil (4-[bis(2-chlorethyl)amino]benzenebutanoic acid), DTIC-Dome (5-(3,3-dimethyl-1-triazeno)-imidazole-4-carboxamide), platinum chemotherapeutics and nonplatinum chemotherapeutics. Platinum containing anti-tumor agents include, but are not limited to, cisplatin (cis-dichlorodiamineplatinum). Non-platinum containing anti-tumor agents include, but are not limited to, cyclophosphamide, fluorouracil, epirubicin, methotrexate, vincristine, doxorubicin, bleomycin, and etoposide. Each anti-tumor agent is administered in a therapeutically effective amount, which varies based on the agent used, the type of malignancy to be treated or ameliorated and other conditions, according to methods well known in the art.

The term “subject” as used herein, refers to an animal, preferably a mammal, most preferably a human, who has been the object of treatment, observation or experiment.

The term “therapeutically effective amount” as used herein, means that amount of active compound or pharmaceutical agent that elicits the biological or medicinal response in a tissue system, animal or human, that is being sought by a researcher, veterinarian, medical doctor, or other clinician, which includes alleviation of the symptoms of the disease or disorder being treated.

The ubiquitous nature of the kinase isoforms and their important roles in physiology provide incentive to produce highly selective kinase inhibitors. Given the evidence demonstrating linkage of certain isoforms to disease states, it is reasonable to assume that inhibitory compounds that are selective to one or two isoforms (those compounds selective to at least two cyclin dependent kinase or tyrosine kinase isoforms are referred to as dual kinase inhibitors) or to a single isoform relative to other isoforms and other kinases are superior therapeutic agents. Such compounds should demonstrate greater efficacy and lower toxicity by virtue of their specificity. Accordingly, it will be appreciated by one skilled in the art that a compound of Formula (I) is therapeutically effective for certain kinase or dual-kinase mediated disorders based on the modulation of the disorder by selective kinase or dual-kinase inhibition. The activity of the instant compounds as selective kinase or dual-kinase inhibitors is derived from the novel combination of the structural elements X, R₃ and R₄ optimally substituted on the triazole scaffold. The usefulness of a compound of Formula (I) as a selective kinase or dual-kinase inhibitor can be determined according to the methods disclosed herein and the scope of such usefulness includes use in one or more kinase or dual-kinase mediated disorders.

Therefore, the term “kinase or dual-kinase mediated disorders” as used herein, includes, and is not limited to compounds capable of inhibiting one or more kinases where knase inhibition is also associated with cancers, abnormal cell proliferation, tumor growth, tumor vascularization, as well as angiopathy, angiogenesis, chemotherapy-induced alopecia and restenosis.

The compounds of this invention are useful as an adjunct to a variety of chemotherapeutic agents that are recommended for specific cancer therapy regimes. For example, the compounds of this invention have been demonstrated to be useful in combination therapies with at least one other chemotherapeutic agent for the treatment of a number of different cancers and advantageously appears to facilitate the use of a reduced dose of the chemotherapeutic agent that is recommended for a particular cancer or cell proliferation disorder. Therefore, it is contemplated that the compounds of this invention can be used in a treatment regime before the administration of a particular chemotherapeutic agent recommended for the treatment of a particular cancer, during admninstration of the chemotherapeutic agent or after treatment with a particular chemotherapeutic agent.

Pharmaceutical compositions contemplated within this invention can be prepared according to conventional pharmaceutical techniques. A pharmaceutically acceptable carrier may be used in the composition of the invention. The composition may take a wide variety of forms depending on the form of preparation desired for administration including, but not limited to, intravenous (both bolus and infusion), oral, nasal, transdermal, topical with or without occlusion, intraperitoneal, subcutaneous, intramuscular or parenteral, all using forms well known to those of ordinary skill in the pharmaceutical arts. In preparing the compositions in oral dosage form, one or more of the usual pharmaceutical carriers may be employed, such as water, glycols, oils, alcohols, flavoring agents, preservatives, coloring agents, syrup and the like in the case of oral liquid preparations (for example, suspensions, elixirs and solutions), or carriers such as starches, sugars, diluents, granulating agents, lubricants, binders, disintegrating agents and the like in the case of oral solid preparations (for example, powders, capsules and tablets).

As is also known in the art, the compounds may alternatively be administered parenterally via injection of a formulation consisting of the active ingredient dissolved in an inert liquid carrier. The injectable formulation can include the active ingredient mixed with an appropriate inert liquid carrier. Acceptable liquid carriers include vegetable oils such as peanut oil, cotton seed oil, sesame oil, and the like, as well as organic solvents such as solketal, glycerol, formal, and the like. As an alternative, aqueous parenteral formulations may also be used. For example, acceptable aqueous solvents include water, Ringer's solution and an isotonic aqueous saline solution. Further, a sterile non-volatile oil can usually be employed as solvent or suspending agent in the aqueous formulation. The formulations are prepared by dissolving or suspending the active ingredient in the liquid carrier such that the final formulation contains from 0.005 to 10% by weight of the active ingredient. Other additives including a preservative, an isotonizer, a solubilizer, a stabilizer and a pain-soothing agent may adequately be employed.

Furthermore, compounds of the present invention can be administered in intranasal form via topical use of suitable intranasal vehicles, or via transdermal routes, using those forms of transdermal skin patches well known to those of ordinary skill in that art. To be administered in the form of a transdermal delivery system, the dosage administration will, of course, be continuous rather than intermittent throughout the dosage regimen.

Because of their ease of administration, tablets and capsules represent an advantageous oral dosage unit form, wherein solid pharmaceutical carriers are employed. If desired, tablets may be sugarcoated or enteric-coated by standard techniques.

For liquid forms the active drug component can be combined in suitably flavored suspending or dispersing agents such as the synthetic and natural gums, including for example, tragacanth, acacia, methyl-cellulose and the like. Other dispersing agents that may be employed include glycerin and the like.

The compounds of the present invention can also be administered in the form of liposome delivery systems, such as small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles. Liposomes containing delivery systems as well known in the art are formed from a variety of phospholipids, such as cholesterol, stearylamine or phosphatidylcholines.

The instant pharmaceutical composition will generally contain a per dosage unit (e.g., tablet, capsule, powder, injection, teaspoonful and the like) from about 0.001 to about 100 mg/kg. In one embodiment, the instant pharmaceutical composition contains a per dosage unit of from about 0.01 to about 50 mg/kg of compound, and preferably from about 0.05 to about 20 mg/kg. Methods are known in the art for determining therapeutically effective doses for the instant pharmaceutical composition. The therapeutically effective amount for administering the pharmaceutical composition to a human, for example, can be determined mathematically from the results of animal studies.

Abbreviations “Cpd” Compound “CSCl₂” thiophosgene “DIC” diisopropyl carbodiimide “DMF” N,N-dimethylformamide “EDCI” ethyl dimethylaminopropyl carbodiimide “HOBT” hydroxybenzyl triazole “NH₂NH₂” hydrazine “Pd” palladium(II) “Ph” phenyl “rt” room temperature “TBAF” tetrabutylammonium fluoride “TFA” trifluoroacetic acid “THF” tetrahydrofuran

Nomenclature

Compounds are named according to nomenclature well known in the art, as exemplified using ring numbering as follows:

4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide

Names can be generated using a nomenclature system based on this example, or may be generated using commercial chemical naming software such as ACD/Index Name (Advanced Chemistry Development, Inc., Toronto, Ontario).

General Synthetic Methods

Representative compounds of the present invention can be synthesized in accordance with the general synthetic methods described below and are illustrated more particularly in the schemes that follow. Since the schemes are illustrations, the invention should not be construed as being limited by the chemical reactions and conditions expressed. The preparation of the various starting materials used in the schemes is well within the skill of persons versed in the art.

Scheme A

To prepare a Compound A3 (as described in Jenardanan, G. C., Francis, M., Deepa, S., and Rajaskekharan, N. R., Synthetic Communications, 1997, 27, 19, 3457-3462), the isocyanate Compound A1 (prepared according to R. L. McKee and R. W. Bost, J. Am. Chem. Soc., 1946, 68, 2506-2507) (wherein R₁ is as previously defined) was dissolved in a suitable solvent and combined with a suspension of Compound A2 and potassium hydroxide in solvent. The mixture was warmed and stirred and the product Compound A3 was isolated by precipitation in cold water.

To prepare a Compound A5 (Reiter, J., Pongo, L. and Dvortsak, P,. J. Heterocyclic Chemistry, 1987, 24, 127-142), Compound A3 was dissolved in a suitable solvent and reacted with hydrazine. The solvent was then evaporated and the residue of Compound A3 was refluxed in an alcohol solvent to produce a solid Compound A4. Compound A4 was dissolved in a suitable solvent and reacted with R₃CO₂H or R₃COCl (wherein R₃ is as previously defined) and a coupling reagent such as DIC (diisopropyl carbodiimide) or EDCI (ethyl dimethylaminopropyl carbodiimide) to yield the target Compound A5.

Scheme B

Alternatively, Compound B3 was prepared according to published procedure (as described in Webb, R. L., Eggleston, D. S. and Labaw, C. S., J. Heterocyclic Chemistry, 1987, 24, 275-278). Following the procedure of Scheme A, Compound B3 was reacted with hydrazine to produce the target intermediate Compound A4.

Scheme C

Compound C1 (CAS # 1455-77-2) was dissolved in a suitable solvent and reacted with R₃CO₂H or R₃COCl (wherein R₃ is as previously defined) and a coupling reagent such as DIC or EDCI to yield the Compound C2. Compound C2 was purified, dissolved in a suitable solvent and reacted in an inert atmosphere with R₁-halo (wherein R₁ and halo are as previously defined; in addition to halo, R₁ may be coupled with another suitable leaving group) in the presence of a base, such as potassium carbonate, and a catalyst, such as a palladium complex. The product Compound A5 was isolated using conventional means.

Scheme D

Alternatively, Compound D1 (CAS# 24807-56-5) was dissolved in a suitable solvent and reacted with R₁NH₂ in the presence of a base such as potassium carbonate, and a catalyst such as a palladium complex to yield the Compound D2. Compound D2 was purified, dissolved in a suitable solvent and subjected to catalytic hydrogenation to give Compound A4. Compound A4 may then be used to produce other target compounds of the invention as described in Scheme A.

Scheme E

Compound A3 was dissolved in a solvent and reacted with a protecting group such as a substituted benzyl halide (for example, 4-methoxybenzyl bromide) in the presence of a base (such as potassium carbonate) to yield a Compound E1. Compound E1 was purified, dissolved in a suitable solvent and then reacted with R₂-halo (wherein R₂ and halo are as previously defined; in addition to halo, R₂ may be coupled with another suitable leaving group) in the presence of a base (such as potassium carbonate) to give a Compound E2. Compound E2 was treated with a suitable reagent, such as trifluoroacetic acid, which upon heating produced Compound E3. Compound E3 was dissolved in a suitable solvent and reacted with R₃CO₂H or R₃COCl (wherein R₃ is as previously defined) and a coupling reagent such as DIC or EDCI to yield a target Compound E4. The product Compound E4 was purified using conventional means.

Alternatively, to prepare a Compound E4, Compound A5 was dissolved in a suitable solvent and reacted with R₂-halo (wherein R₂ and halo are as previously defined; in addition to halo, R₂ may be coupled with another suitable leaving group) in the presence of a base (such as potassium carbonate).

Specific Synthetic Examples

Specific compounds which are representative of this invention were prepared as per the following examples and reaction sequences; the examples and the diagrams depicting the reaction sequences are offered by way of illustration, to aid in the understanding of the invention and should not be construed to limit in any way the invention set forth in the claims which follow thereafter. The depicted intermediates may also be used in subsequent examples to produce additional compounds of the present invention. No attempt has been made to optimize the yields obtained in any of the reactions. One skilled in the art would know how to increase such yields through routine variations in reaction times, temperatures, solvents and/or reagents.

¹H and ¹³C NMR spectra were measured on a Bruker AC-300 (300 MHz) spectrometer using tetramethylsilane and DMSO respectively as internal standards. Elemental analyses were obtained by Quantitative Technologies Inc. (Whitehouse, N.J.), and the results were within 0.4% of the calculated values unless otherwise mentioned. Melting points were determined in open capillary tubes with a Mel-Temp II apparatus (Laboratory Devices Inc.) and were uncorrected. Electrospray mass spectra (MS-ES) were recorded on a Hewlett Packard 59987A spectrometer.

EXAMPLE 1 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide (Cpd 1)

A suspension of 1-amidino-3,5-dimethylpyrazole nitrate Compound 1C (2.012 g, 10 mmol) and potassium hydroxide powder (0.561 g, 10 mmol) in DMF (8 mL) at 0° C. was added to a DMF solution (3 mL) of isocyanate Compound 1B (prepared from sulfanilamide Compound 1A and thiophosgene according to R. L. McKee and R. W. Bost, J. Am. Chem. Soc., 1946, 68, 2506-2507). The reaction mixture was warmed up to 50-60° C., stirred for 1 h, and then poured into 250 ml of icy water. The resultant yellow solid was filtered, rinsed with water and dried in vacuo to give an intermediate Compound 1D as yellow powder (2.5513 g); m.p. 69-80° C. (decomposed); ¹H NMR (300 MHz, CD₃OD) δ 7.90 (m, 4H), 6.05 (s, 1H), 2.22 (s, 3H), 2.20 (s, 3H); (CDCl₃) δ 10.75 (s, br, 1H), 8.35 (s, br, 1H), 7.90 (q, 4H), 7.65 (s, br, 2H), 5.95 (s, 1H), 5.00 (s, br, 2H); MS (ESI) m/z: 353 (M+H⁺).

Hydrazine (1.845 g, 57.58 mmol) was added to a solution of the intermediate Compound 1D (1.88 g, 5.33 mmol) in THF (60 mL). The reaction mixture was stirred vigorously at 50-60° C. for 2-3 hours, and then evaporated in vacuo. The residue was then refluxed in methanol (60 mL) and cooled down to rt. The resultant solid was collected by filtration and rinsed with methanol to produce intermediate Compound 1E as a gray solid (0.8722 g, 64%). m.p. 291-296° C. (decomposed); ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.20 (s, 1H), 7.60 (m, 4H), 7.00 (s, 2H), 5.90 (s, 2H); MS (ESI) m/z: 255 (M+H⁺), 277 (M+Na⁺).

2,6-difluorobenzoyl chloride Compound 1F (41.4 uL, 0.33 mmol) was added to a solution of the intermediate Compound 1E (63.6 mg, 0.25 mmol) dissolved in anhydrous pyridine (2.5 mL) in an ice-water bath. The resulting reaction mixture was stirred at rt for 6 hours, and then evaporated in vacuo to dryness. Chromatography purification of the residue with 10% methanol/methylene chloride and recrystallization from THF/methylene chloride gave Compound 1 (50.2 mg, 51%) as a white powder. m.p. 149-155° C. (decomposed); ¹H NMR (300 MHz, CD₃OD) δ 7.65 (m, 3H), 7.55 (d, 2H), 7.18 (t, 2H); ((CD₃)₂SO) δ 9.86 (s, 1H), 8.03 (s, 2H), 7.72 (m, 1H), 7.58 (d, J=8.9 Hz, 2H), 7.46 (d, J=8.9 Hz, 2H), 7.35 (t, J=8.3 Hz, 2H), 7.11 (s, 2H); ¹³C NMR (300 MHz, (CD₃)₂SO) δ 160.4, 159.7, 158.9, 157.9, 157.1, 157.0, 156.6, 144.0, 135.6, 133.9, 127.0, 116.3, 112.9, 112.5, 112.3; MS (ESI) m/z: 395 (M+H⁺), 417 (M+Na⁺). Anal. Calcd. For C₁₅H₁₂ F₂N₆O₃S: C, 45.69; H, 3.07; N, 21.31. Found: C, 45.29; H, 3.04; N, 20.89.

Using the procedure for Example 1, the following compounds were prepared by acylation of the intermediate Compound 1E using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 2 4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H-1,2,4- 2,6-difluoro-3- triazol-3-yl]amino]-benzenesulfonamide methylbenzoyl ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.80 (s, 1H), 7.78-7.55 chloride in (m, 5H), 7.52 (s, 2H), 7.12 (t, 2H), 6.38 (s, 2H), 2.22 (s, anhydrous pyridine 3H); MS (ESI) m/z: 409 (M + H⁺), 431 (M + Na⁺) 3 4-[[5-amino-1-(2,3,6-trifluorobenzoyl)-1H-1,2,4-triazol- 2,3,6- 3-yl]amino]-benzenesulfonamide trifluorobenzoyl ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.85 (s, 1H), 7.78-7.50 chloride in (m, 7H), 7.32 (m, 1H), 6.38 (s, 2H); MS (ESI) m/z: 413 anhydrous pyridine (M + H⁺), 435 (M + Na⁺) 4 4-[[5-amino-1-(2-fluorobenzoyl)-1H-1,2,4-triazol-3- 2-fluorobenzoyl yl]amino]-benzenesulfonamide chloride in ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.90 (s, br, 1H), 8.00 anhydrous pyridine (s, br, 2H), 7.82 (t, 1H), 7.78-7.20 (m, 7H), 6.35 (s, br, 2H); MS (ESI) m/z: 377 (M + H⁺), 399 (M + Na⁺) 5 4-[[5-amino-1-(2,4-difluorobenzoyl)-1H-1,2,4-triazol-3- 2,4-difluoromethylben- yl]amino]-benzenesulfonamide zoyl chloride in ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.88 (s, 1H), 7.95 (s, anhydrous pyridine 2H), 7.78-7.58 (m, 4H), 7.48 (s, 2H), 7.35-7.77 (m, 2H), 6.38 (s, 2H); MS (ESI) m/z: 395 (M + H⁺), 417 (M + Na⁺) 6 4-[[5-amino-1-[2-fluoro-6-(trifluoromethyl)benzoyl]-1H- 2-fluoro-6- 1,2,4-triazol-3-yl]amino]-benzenesulfonamide (trifluoromethyl)- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.86 (s, 1H), 8.06 (s, benzoyl chloride in 2H), 7.85 (m, 3H), 7.54 (d, J = 8.9 Hz, 2H), 7.40 (d, J = 8.9 THF Hz, 2H), 7.09 (s, 2H); MS (ESI) m/z: 445 (M + H⁺), 467 (M + Na⁺) 7 4-[[5-amino-1-(2,6-dichlorobenzoyl)-1H-1,2,4-triazol-3- 2,6-dichlorobenzoyl yl]amino]-benzenesulfonamide chloride in ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.82 (s, 1H), 7.68-7.45 anhydrous pyridine (m, 9H), 6.35 (s, 2H); (CD₃OD) δ 7.60 (d, 2H), 7.55 (m, 3H), 7.38 (d, 2H); MS (ESI) m/z: 428 (M + H⁺), 450 (M + Na⁺) 8 4-[[5-amino-1-(2,4,6-trichlorobenzoyl)-1H-1,2,4-triazol- 2,4,6- 3-yl]amino]-benzenesulfonamide trichlorobenzoyl ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.88 (s, 1H), 7.78 (s, chloride in 2H), 7.75-7.48 (m, 6H), 6.38 (s, 2H); MS (ESI) m/z: 462 anhydrous pyridine (M + H⁺), 484 (M + Na⁺) 9 4-[[5-amino-1-(2-nitrobenzoyl)-1H-1,2,4-triazol-3- 2-nitrobenzoyl yl]amino]-benzenesulfonamide chloride in ¹H NMR (300 MHz, CD₃OD) δ 8.28 (d, 2H), 8.95-7.85 anhydrous pyridine (m, 3H), 7.62 (d, 2H), 7.35 (d, 2H); MS (ESI) m/z: 404 (M + H⁺), 426 (M + Na⁺) 10 4-[[5-amino-1-(2,6-dimethoxybenzoyl)-1H-1,2,4-triazol- 2,6- 3-yl]amino]-benzenesulfonamide dimemoxybenzoyl ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.65 (s, br, 1H), 7.68 chloride in (m, 4H), 7.50 (d, 1H), 7.30 (s, br, 2H), 6.72 (d, 1H), 6.68 anhydrous pyridine (dd, 1H), 6.35 (s, br, 2H), 3.92 (s, 3H), 3.85 (s, 3H); MS (ESI) m/z: 419 (M + H⁺), 441 (M + Na⁺) 11 4-[[5-amino-1-(2,4,6-trimethylbenzoyl)-1H-1,2,4-triazol- 2,4,6- 3-yl]amino]-benzenesulfonamide trimethylbenzoyl ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.78 (s, 1H), 7.78 (s, chloride in 2H), 7.72-7.43 (m, 5H), 7.75-6.78 (m, 3H), 6.35 (s, 2H), anhydrous pyridine 2.38-2.16 (m, 9H); MS (ESI) m/z: 401 (M + H⁺), 423 (M + Na⁺) 12 4-[(5-amino-1-benzoyl-1H-1,2,4-triazol-3-yl)amino]- Benzoyl chloride in benzenesulfonamide anhydrous pyridine ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.80 (s, 1H), 8.28 (d, 2H), 7.80-7.58 (m, 7H), 7.52 (s, 2H), 6.38 (s, 2H); MS (ESI) m/z: 359 (M + H⁺), 381 (M + Na⁺) 14 4-[[5-amino-1-(2-thienylcarbonyl)-1H-1,2,4-triazol-3- Thiophene-2- yl]amino]-benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.92 (s, 1H), 8.40 (dd, mediated by 1H), 8.12 (dd, 1H), 7.88 (q, 4H), 7.50 (s, 2H), 7.32 (t, DIC/HOBt (1- 1H), 6.45 (s, 2H); MS (ESI) m/z: 365 (M + H⁺), 387 hydroxybenzo (M + Na⁺) triazole) in anhydrous DMF 15 4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4- 3-methyl- triazol-3-yl]amino]-benzenesulfonamide thiophene-2- m.p. 280-284° C.; ¹H NMR (300 MHz, (CD₃)₂SO) δ carboxylic acid 9.88 (s, 1H), 8.05 (d, 1H), 7.88 (s, 2H), 7.78 (q, 4H), 7.15 mediated by (m, 3H), 2.62 (s, 3H); DIC/HOBt in (CD₃)₂CO δ 8.92 (s, 1H), 7.98 (d, 1H), 7.90 (q, 4H), 7.45 anhydrous DMF (s, 2H), 7.15 (d, 1H), 6.42 (s, 2H), 2.68 (s, 3H); ¹³C NMR (300 MHz, (CD₃)₂SO) δ 160.6, 157.9, 157.4, 157.2, 150.9, 143.9, 136.0, 135.5, 131.8, 127.3, 124.3, 116.3, 18.1; MS (ESI) m/z: 379 (M + H⁺), 401 (M + Na⁺) 16 4-[[5-amino-1-[(3-fluoro-2-thienyl)carbonyl]-1H-1,2,4- 3-fluorothiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.92 (s, br, 1H), 8.18 (prepared according (t, 1H), 7.92 (s, br, 2H), 7.78 (q, 4H), 7.25 (d, 1H), 7.18 to E. C. Taylor and (s, br, 2H); MS (ESI) m/z: 383 (M + H⁺), 405 (M + Na⁺) P. Zhou, Org. Prep. Proced. Int., 1997, 29, 221) mediated by DIC/HOBt in anhydrous DMF 17 4-[[5-amino-1-[(3-chloro-2-thienyl)carbonyl]-1H-1,2,4- 3-chlorothiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.92 (s, br, 1H), 8.25 mediated by (d, 1H), 7.95 (s, br, 2H), 7.78 (q, 4H), 7.32 (d, 1H), 7.18 EDCI/HOBt in (s, br, 2H); MS (ESI) m/z: 399 (M + H⁺), 421 (M + Na⁺) anhydrous DMF 18 4-[[5-amino-1-[(3-ethoxy-2-thienyl)carbonyl]-1H-1,2,4- 3-ethoxythiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.85 (s, br, 1H), 8.08 mediated by (d, 1H), 7.85-7.75 (m, 6H), 7.28 (d, 1H), 7.15 (s, br, 2H); DIC/HOBt in MS (ESI) m/z: 409 (M + H⁺), 431 (M + Na⁺) anhydrous DMF 19 N-[2-[[5-amino-3-[[4-(aminosulfonyl)phenyl]amino]-1H- 3-(acetylamino)- 1,2,4-triazol-1-yl]carbonyl]-3-thienyl]-acetamide thiophene-2- ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.0 (s, br, 1H), 9.92 carboxylic acid (s, br, 1H), 8.18 (q, 2H), 7.85 (s, br, 2H), 7.78 (q, 4H), mediated by 7.15 (s, br, 2H), 2.20 (s, 3H); MS (ESI) m/z: 421 DIC/HOBt in (M + H⁺), 444 (M + Na⁺) anhydrous DMF 20 4-[[5-amino-1-[(5-methyl-2-thienyl)carbonyl]-1H-1,2,4- 5-methyl- triazol-3-yl]amino]-benzenesulfonamide thiophene-2- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.92 (s, br, 1H), 8.15 carboxylic acid (d, 1H), 7.85 (s, br, 2H), 7.78 (q, 4H), 7.20 (s, br, 2H), mediated by 7.08 (d, 1H), 2.62 (s, 3H); MS (ESI) m/z: 379 (M + H⁺) DIC/HOBt in anhydrous DMF 21 4-[[5-amino-1-[(5-bromo-2-thienyl)carbonyl]-1H-1,2,4- 5-bromothiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.98 (s, br, 1H), 8.05 mediated by (d, 1H), 7.95 (s, br, 2H), 7.78 (q, 4H), 7.48 (d, 1H), 7.20 DIC/HOBt in (s, br, 2H); MS (ESI) m/z: 444 (M + H⁺) anhydrous DMF 22 4-[[1-[(5-acetyl-2-thienyl)carbonyl]-5-amino-1H-1,2,4- 5-acetylthiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.02 (s, br, 1H), 8.28 mediated by (d, 1H), 8.02 (d, 1H), 7.95 (s, br, 2H), 7.75 (q, 4H), 7.20 DIC/HOBt in (s, br, 2H), 2.65 (s, 3H); MS (ESI) m/z: 407 (M + H⁺), 429 anhydrous DMF (M + Na⁺) 25 4-[[5-amino-1-(2-furanylcarbonyl)-1H-1,2,4-triazol-3- 2-furoyl chloride in yl]amino]-benzenesulfonamide anhydrous pyridine ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.87 (s, 1H), 8.20 (d, 1H), 8.02 (dd, 1H), 7.85 (q, 4H), 7.48 (s, 2H), 6.88 (dd, 1H), 6.42 (s, 2H); MS (ESI) m/z: 349 (M + H⁺), 371 (M + Na⁺) 26 4-[[5-amino-1-(5-isoxazolylcarbonyl)-1H-1,2,4-triazol-3- isoxazole-5- yl]amino]-benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.95 (s, br, 1H), 8.92 mediated by (d, 1H), 8.00 (s, br, 2H), 7.78 (d, 2H), 7.68 (m, 3H), 7.15 DIC/HOBt in (s, br, 2H); MS (ESI) m/z: 350 (M + H⁺), 372 (M + Na⁺) anhydrous DMF 27 4-[[5-amino-1-(2-pyridinylcarbonyl)-1H-1,2,4-triazol-3- picolic acid yl]amino]-benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.75 (s, 1H), 8.72 (d, DIC/HOBt in 1H), 8.00 (m, 2H), 7.90 (s, br, 2H), 7.68-7.48 (m, 5H), anhydrous DMF 7.10 (s, br, 2H); MS (ESI) m/z: 360 (M + H⁺), 382, (M + Na⁺) 28 4-[[5-amino-1-(3-pyridinylcarbonyl)-1H-1,2,4-triazol-3- nicotinic acid yl]amino]-benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.82 (s, 1H), 9.22 (d, DIC/HOBt in 1H), 8.78 (dd, 1H), 8.45 (dd, 1H), 7.92 (s, br, 2H), 77.62 anhydrous DMF (q, 4H), 7.15 (s, br, 2H); MS (ESI) m/z: 360 (M + H⁺), 382, (M + Na⁺) 29 4-[[5-amino-1-(4-pyridinylcarbonyl)-1H-1,2,4-triazol-3- isonicotinic acid yl]amino]-benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.80 (s, 1H), 8.82 (d, DIC/HOBt in 2H), 8.00-7.90 (m, 4H), 7.60 (q, 4H), 7.12 (s, br, 2H); anhydrous DMF MS (ESI) m/z: 360 (M + H⁺), 382, (M + Na⁺) 30 4-[[5-amino-1-(3-thienylcarbonyl)-1H-1,2,4-triazol-3- thiophene-3- yl]amino]-benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂CO) δ 9.08 (d, 1H), 8.85 (s, mediated by br, 1H), 7.98 (dd, 1H), 7.82 (q, 4H), 7.62 (dd, 1H), 7.48 DIC/HOBt in (s, br, 1H), 6.45 (s, br, 2H); MS (ESI) m/z: 365 (M + H⁺), anhydrous DMF 387 (M + Na⁺) 31 4-[[5-amino-1-(benzo[b]thien-2-ylcarbonyl)-1H-1,2,4- benzo[b]thiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.95 (s, br, 1H), 8.85 mediated by (s, 1H), 8.15 (dd, 2H), 8.02 (s, br, 2H), 7.85 (q, 4H), 7.55 DIC/HOBt in (m, 2H), 7.18 (s, br, 2H); MS (ESI) m/z: 415 (M + H⁺) anhydrous DMF 34 4-[[5-amino-1-[(2,4-dimethyl-5-thiazolyl)carbonyl]-1H- 2,4- 1,2,4-triazol-3-yl]amino]-benzenesulfonamide dimethylthiazole-5- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.88 (s, br, 1H), 7.90 carboxylic acid (s, br, 2H), 7.78 (q, 4H), 7.15 (s, br, 2H), 2.78 (s, 6H); mediated by MS (ESI) m/z: 394 (M + H⁺), 416 (M + Na⁺) DIC/HOBt in anhydrous DMF 35 4-[[5-amino-1-[(3-bromo-2-thienyl)carbonyl]-1H-1,2,4- 3-bromomiophene- triazol-3-yl]amino]-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.95 (s, 1H), 8.23 (d, mediated by J = 5.3, 1H), 7.95 (s, 2H), 7.77 (s, 4H), 7.39 (d, J = 5.3, 1H), DIC/HOBt in 7.16 (s, 2H); MS (ESI) m/z: 444.9 (M + H), 466.9 anhydrous DMF (M + Na⁺) 36 4-[[5-amino-1-[(4-methyl-1,2,3-thiadiazol-5- 4-methyl-1,2,3- yl)carbonyl]-1H-1,2,4-triazol-3-yl] amino]-benzenesulfonamide thiadiazol-5- ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.07 (s, 1H), 8.09 (s, carboxylic acid 2H), 7.86 (d, J = 8.8, 2H), 7.72 (d, J = 8.9, 2H), 7.21(s, 2H), mediated by 3.02 (s, 3H); MS (ESI) m/z: 381.0 (M + H), 403.0 DIC/HOBt in (M + Na⁺) anhydrous DMF 37 4-[[5-amino-1-(1,2,3-thiadiazol-4-ylcarbonyl)-1H-1,2,4- 1,2,3- triazol-3-yl]amino]-benzenesulfonamide thiadiazole-4- ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.18 (s, 1H), 9.93 (s, carboxylic acid 1H), 8.05 (s, 2H), 7.76 (d, J = 8.8, 2H), 7.63(d, J = 8.8, 2H), mediated by 7.16 (s, 2H); MS(ESI) m/z: 367.0 (M + H), 389.0 DIC/HOBt in (M + Na⁺) anhydrous DMF 38 4-[[5-amino-1-(cyclopentylcarbonyl)-1H-1,2,4-triazol-3- cyclopetanecarbox- yl]amino]-benzenesulfonamide ylic acid mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.73 (s, 1H), 7.69 (s, DIC/HOBt in 4H), 7.65 (s, 2H), 7.13 (s, 2H), 1.78 (m, 3H), 1.65 (m, anhydrous DMF 6H); MS (ESI) m/z: 351.0 (M + H), 373.0 (M + Na⁺) 39 4-[[5-amino-1-(cyclohexylcarbonyl)-1H-1,2,4-triazol-3- cyclohexanecarbox- yl]amino]-benzenesulfonamide ylic acid mediated ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.76 (s, 1H), 7.69 (s, by DIC/HOBt in 4H), 7.66 (s, 2H), 7.13 (s, 2H), 1.98 (s, 2H), 1.80 (s, 2H), anhydrous DMF 1.69 (d, 1H), 1.36 (m, 6H); MS (ESI) m/z: 365.0 (M + H), 387.1 (M + Na⁺) 40 4-[[5-amino-1-(2-thienylacetyl)-1H-1,2,4-triazol-3- 2-thiopheneacetic yl]amino]-benzenesulfonamide acid mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.80 (s, 1H), 7.73 (d, DIC/HOBt in J = 1.2, 4H), 7.69 (s, 2H), 7.45 (dd, J = 1.5, 1H), 7.16 (s, anhydrous DMF 2H), 7.08 (d, J = 2.7, 1H), 7.01 (t, J = 5.1, 1H), 4.52 (s, 2H); MS (ESI) m/z: 379.0 (M + H), 400.9 (M + Na⁺) 42 4-[[5-amino-1-[(2E)-1-oxo-3-(2-thienyl)-2-propenyl]-1H- 3-(2-thienyl)acrylic 1,2,4-triazol-3-yl]amino]-benzenesulfonamide acid mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.82 (s, 1H), 7.92 (d, DIC/HOBt in J = 8.3, 1H), 7.72 (s, 4H), 7.35 (d, J = 15.8, 2H), 7.26 (d, anhydrous DMF J = 19.5, 3H), 7.15 (s, 2H), 6.26 (s, 1H); MS (ESI) m/z: 391.0 (M + H), 412.9 (M + Na⁺) 43 4-[[5-amino-1-[(2,6-difluorophenyl)acetyl]-1H-1,2,4- 2,6-difluorophenyl triazol-3-yl]amino]-benzenesulfonamide acetic acid mediated ¹H NMR (300 MHz, (CD₃)₂SO) δ by DIC/HOBt in 9.81 (s, 1H), 7.69 (s, 6H), 7.44 (t, J = 16.6, 1H), 7.16 (s, anhydrous DMF 3H), 4.37 (s, 2H); MS (ESI) m/z: 409.0 (M + H), 431.0 (M + Na⁺) 44 4-[[5-amino-1-[(2E)-3-(2,6-difluorophenyl)-1-oxo-2- 2,6-difluoro propenyl]-1H-1,2,4-triazol-3-yl]amino]- cinnamic acid benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.86 (s, 1H), 7.85 (d, DIC/HOBt in J = 4.7, 2H), 7.71 (s, 4H), 7.31 (m, 4H), 7.16 (s, 2H), 6.31 anhydrous DMF (s, 1H); MS (ESI) m/z: 421.0 (M + H), 442.9 (M + Na⁺) 45 4-[[5-amino-1-(cycloheptylcarbonyl)-1H-1,2,4-triazol-3- cycloheptanecarbox- yl]amino]-benzenesulfonamide ylic acid mediated ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.75 (s, 1H), 7.69 (s, by DIC/HOBt in 4H), 7.66 (s, 2H), 7.12 (s, 2H), 2.00 (d, J = 11.7, 2H), 1.77 anhydrous DMF (d, J = 10.5, 2H), 1.40 (m, 3H), 1.07 (m, 2H), 0.91 (d, J = 6.4, 4H); MS (ESI) m/z: 254, 379.0 (M + H), 401.0 (M + Na⁺) 46 4-[[5-amino-1-[(4-methylcyclohexyl)carbonyl]-1H-1,2,4- trans-4-methyl-1- triazol-3-yl]amino]-benzenesulfonamide cyclohexanecarbox- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.75 (s, 1H), 7.69 (s, ylic acid mediated 4H), 7.66 (s, 2H), 7.12 (s, 2H), 2.00 (d, J = 11.7, 2H), 1.77 by DIC/HOBt in (d, J = 10.5, 2H), 1.40 (m, 3H), 1.07 (m, 2H), 0.91 (d, anhydrous DMF J = 6.4, 4H); MS (ESI) m/z: 254, 379.0 (M + H), 401.0 (M + Na⁺) 47 4-[[5-amino-1-[(2-methylcyclohexyl)carbonyl]-1H-1,2,4- 2-methyl-1- triazol-3-yl]amino]-benzenesulfonamide cyclohexanecarbox- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.75 (s, 1H), 7.68 (s, ylic acid mediated 4H), 7.66 (s, 2H), 7.13 (s, 2H), 1.55 (m, 9H), 0.85 (d, by DIC/HOBt in J = 6.0, 4H); MS (ESI) m/z: 254, 379.0 (M + H), 401.0 anhydrous DMF (M + Na⁺) 48 4-[[5-amino-1-[(4-butylcyclohexyl)carbonyl]-1H-1,2,4- trans-4-butyl-1- triazol-3-yl]amino]-benzenesulfonamide cyclohexanecarbox- ¹H NMR (300 MHZ, (CD₃)₂SO) δ 9.75 (S, 1H), 7.68 (S, ylic acid mediated 4H), 7.66 (S, 2H), 7.12 (S, 2H), 2.02 (D, J = 11.3, 2H), by DIC/HOBt in 1.82 (D, J = 9.9, 2H), 1.40 (D, J = 11.3, 2H), 1.25 (S, 7H), anhydrous DMF 1.02 (M, 4H), 0.87 (S, 4H). MS (ESI) M/Z: 254, 435.1 (M + H), 457.1 (M + NA⁺) 49 4-[[5-amino-1-[[5-(2-pyridinyl)-2-thienyl]carbonyl]-1H- 5-(2-pyridyl)- 1,2,4-triazol-3-yl]amino]-benzenesulfonamide thiophene-2- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.98 (s, 1H), 8.65 (d, carboxylic acid 1H), 8.25 (d, 1H), 8.08 (d, 1H), 8.02-7.75 (m, 8H), 7.42 mediated by (dd, 1H), 7.20 (s, 2H). MS (ESI) m/z: 442 (M + H⁺), 464 DIC/HOBt in (M + Na⁺) anhydrous DMF 50 4-[[5-amino-1-[[3-(1H-pyrrol-1-yl)-2-thienyl]carbonyl]- 3-(1H-pyrrol-1-yl)- 1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide thiophene-2- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.85 (s, 1H), 8.18 (d, carboxylic acid 1H), 7.85-7.70 (m, 6H), 7.32 (d, 1H), 7.18 (s, 2H), 7.12 mediated by (t, 2H), 6.20 (t, 2H). MS (ESI) m/z: 430 (M + H⁺) DIC/HOBt in anhydrous DMF 51 4-[[5-amino-1-[[5-(1,1-dimethylethyl)-2- 5-tert- thienyl]carbonyl]-1H-1,2,4-triazol-3-yl]amino]- butylthiophene-2- benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.95 (s, 1H), 8.25 (d, mediated by 1H), 7.95 (d, 2H), 7.85 (d, 2H), 7.50 (s, 2H), 7.18 (d, DIC/HOBt in 1H), 6.48 (s, 2H), 1.55 (s, 9H). MS (ESI) m/z: 421 anhydrous DMF (M + H⁺), 443 (M + Na⁺) 52 3-[5-[[5-amino-3-[[4-(aminosulfonyl)phenyl]amino]-1H- 5-(2-tert- 1,2,4-triazol-1-yl]carbonyl]-2-thienyl]-(2E)-2-propenoic butoxycarbonyl- acid-1,1-dimethylethyl ester vinyl)-thiophene-2- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.95 (s, 1H), 8.22 (d, carboxylic acid 1H), 7.95 (s, 2H), 7.82-7.68 (m, 6H), 7.15 (s, 2H), 6.52 (prepared by Heck (d, 1H), 1.52 (s, 9H). MS (ESI) m/z: 491 (M + H⁺), 513 reaction of 5- (M + Na⁺) bromothiophene-2- 5-(2-tert-butoxycarbonyl-vinyl)-thiophene-2-carboxylic carboxylic acid and acid (intermediate)¹H NMR (300 MHz, (CD₃)₂CO) δ t-butyl acrylate) 7.80-70 (m, 2H), 7.48 (d, 1H), 7.32 (d, 1H), 1.50 (s, 9H); mediated by MS (ESI) m/z: 253 (M-H⁺), 209 (M-H⁺—CO₂) DIC/HOBt in anhydrous DMF 53 4-[[5-amino-1-[[5-(phenylethynyl)-2-thienyl]carbonyl]- 5-phenylethynyl- 1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide thiophene-2- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.98 (s, 1H), 8.20 (d, carboxylic acid 1H), 7.95 (s, 2H), 7.78 (m, 4H), 7.62 (m, 2H), 7.60 (d, (intermediate 1H), 7.45 (m, 3H), 7.18 (s, 2H). MS (ESI) m/z: 465 prepared by (M + H⁺), 487 (M + Na⁺) oxidation of 5- 5-phenylethynyl-thiophene-2-carboxylic acid phenylethynyl- (intermediate) ¹H NMR (300 MHz, (CD₃)₂CO) δ 7.98 (d, thiophene-2- 1H), 7.58 (m, 2H), 7.45 (m, 3H), 7.35 (d, 1H); MS (ESI) carboxaldehyde), m/z: 229 (M + H⁺) mediated by DIC/HOBt in anhydrous DMF 54 4-[[5-amino-1-(2,6-difluoro-3-nitrobenzoyl)-1H-1,2,4- 2,6-difluoro-3- triazol-3-yl]amino]-benzenesulfonamide nitro-benzoic acid ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.90 (s, 1H), 8.55 (m, mediated by 1H), 7.75-7.50 (m, 7H), 6.25 (s, 2H); MS (ESI) m/z: 440 DIC/HOBt in (M + H⁺), 462 (M + Na⁺) anhydrous DMF 55 4-[[5-amino-1-(3-amino-2,6-difluorobenzoyl)-1H-1,2,4- catalytic triazol-3-yl]amino]-benzenesulfonamide hydrogenation of ¹H NMR (300 MHz, (CD₃OD) δ 7.68 (d, 2H), 7.45 (d, compound 54 in 2H), 6.95 (m, 1H), 6.85 (m, 1H); MS (ESI) m/z: 410 methanol by (M + H⁺), 432 (M + Na⁺) catalysis of 10% palladium on charcoal 56 4-[[5-amino-1-(2,6-dimethylbenzoyl)-1H-1,2,4-triazol-3- 2,6- yl]amino]-benzenesulfonamide dimethylbenzoic ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.75 (s, 1H), 7.65-7.28 acid mediated by (m, 7H), 7.15 (d, 2H), 6.32 (s, 2H), 2.25 (s, 6H); MS DIC/HOBt in (ESI) m/z: 387 (M + H⁺), 409 (M + Na⁺) anhydrous DMF 57 4-[[5-amino-1-(2-methylbenzoyl)-1H-1,2,4-triazol-3- 2-methylbenzoyl yl]amino]-benzenesulfonamide chloride in ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.75 (s, 1H), 7.72-7.25 anhydrous pyridine (m, 10H), 6.35 (s, 2H), 2.45 (s, 3H); MS (ESI) m/z: 373 (M + H⁺), 395 (M + Na⁺) 66 5-amino-3-[[4-(aminosulfonyl)phenyl]amino]-N-(2,6- 2,6-difluorophenyl difluorophenyl)-1H-1,2,4-triazole-1-carbothioamide isothiocyanate in ¹H NMR (300 MHz, (CD₃)₂CO) δ 10.40 (s, 1H), 8.90 (s, anhydrous pyridine 1H), 8.15 (s, 2H), 7.85 (d, 2H), 7.75 (d, 2H), 7.40 (m, 1H), 7.15 (m, 2H), 6.35 (s, 2H), 5.75 (s, 2H); MS (ESI) m/z: 426 (M + H⁺), 448 (M + Na⁺) 67 5-amino-3-[[4-(aminosulfonyl)phenyl]amino]-N-(2,6- 2,6-difluorophenyl difluorophenyl)-1H-1,2,4-triazole-1-carboxamide isocyanate in ¹H NMR (300 MHz, (CD₃)₂CO) δ 9.15 (s, 1H), 8.80 (s, anhydrous DMF 1H), 7.80 (d, 2H), 7.70 (d, 2H), 7.42 (m, 1H), 7.15 (m, 2H), 7.00 (s, 2H), 6.35 (s, 2H); MS (ESI) m/z: 410 (M + H⁺), 432 (M + Na⁺) 68 4-[[5-amino-1-[(2,6-difluorophenyl)sulfonyl]-1H-1,2,4- 2,6- triazol-3-yl]amino]-benzenesulfonamide difluorobenzenesulf- ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.80 (s, 1H), 7.85 (m, onyl chloride in 1H), 7.75 (d, 2H), 7.65 (d, 2H), 7.30 (t, 2H), 6.95 (s, anhydrous pyridine 2H), 6.35 (s, 2H); MS (ESI) m/z: 431 (M + H⁺), 453 (M + Na⁺) 69 4-[[5-amino-1-(2-chloro-6-fluoro-3-methylbenzoyl)-1H- 2-chloro-6-fluoro-3- 1,2,4-triazol-3-yl]amino]-benzenesulfonamide methylbenzoyl ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.85 (s, 1H), 8.05 (s, chloride in 2H), 7.64-7.55 (m, 3H), 7.45-7.35 (m, 3H), 7.10 (s, 2H), anhydrous pyridine 2.38 (s, 3H); MS (ESI) m/z: 425 (M + H⁺), 447 (M + Na⁺) 70 4-[[5-amino-1-(2-chloro-6-fluorobenzoyl)-1H-1,2,4- 2-chloro-6-fluoro- triazol-3-yl]amino]-benzenesulfonamide benzoyl chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.87 (s, 1H), 8.05 anhydrous pyridine (s, 2H), 7.68-7.63 (m, 1H), 7.57-7.50 (m, 3H), 7.48-7.42 (m, 3H), 7.09 (s, 2H); MS (ESI) m/z: 411 (M + H⁺), 433 (M + Na⁺) 78 4-[[5-amino-1-(3-chloro-2,6-difluorobenzoyl)-1H-1,2,4- 3-chloro-2,6- triazol-3-yl]amino]-benzenesulfonamide difluorobenzoic ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.89 (s, 1H), 8.07 (s, acid, mediated by 2H), 8.00-7.92 (m, 1H), 7.59 (d, 2H), 7.49-7.44 (m, 3H), DIC/HOBt in 7.12 (s, 2H); MS (ESI) m/z: 429 (M + H⁺) anhydrous DMF 122 4-[[3-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-5- 2,6-difluorobenzoyl yl]amino]-benzenesulfonamide chloride in (minor regioisomer of Cpd 1)¹H NMR (300 MHz, anhydrous pyridine CD₃CN) δ 9.90 (s, 1H), 7.90 (q, 4H), 7.60 (m, 1H), 7.15 (t, 2H), 5.62 (s, 2H), 4.85 (s, 2H); MS (ESI) m/z: 395 (M + H⁺), 417 (M + Na⁺) 123 4-[[3-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H-1,2,4- 2,6-difluorobenzoyl triazol-5-yl]amino]-benzenesulfonamide chloride in (minor regioisomer of Cpd 2) ¹H NMR (300 MHz, anhydrous pyridine ((CD₃)₂SO) δ 10.0 (s, 1H), 8.00 (d, 2H), 7.78 (d, 2H), 7.50 (m, 1H), 7.20 (s, 2H), 7.15 (t, 2H), 6.25 (s, 2H), 2.28 (s, 3H); MS (ESI) m/z: 409 (M + H⁺), 431 (M + Na⁺) 128 3-amino-5-[[4-(aminosulfonyl)phenyl]amino]-N-(2,6- — difluorophenyl)-1H-1,2,4-triazole-1-carbothioamide (minor regioisomer of Cpd 66) ¹H NMR (300 MHz, (CD₃)₂CO) δ 12.10 (s, 1H), 10.28 (s, 1H), 7.85 (m, 4H), 7.45 (m, 1H), 7.20 (m, 2H), 6.45 (s, 2H), 5.75 (s, 2H); MS (ESI) m/z: 426 (M + H⁺), 448 (M + Na⁺)

EXAMPLE 2 1-(2,6-difluorobenzoyl)-N³-[4-(1-piperidinylsulfonyl)phenyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 13)

Using the procedure for Example 1, 1-amidino-3,5-dimethylpyrazole nitrate Compound 1C was reacted with 1-(4-isothiocyanatophenylsulfonyl)piperidine Compound 2B to produce Compound 2C. ¹H NMR (300 MHz, CD₃CN) δ 10.75 (s, br, 1H), 8.40 (s, br, 1H), 7.95 (s, br, 1H), 7.55 (q, 4H), 5.95 (s, 1H), 3.00 (m, 4H), 2.25 (s, 6H), 1.68 (m, 4H), 1.45 (m, 2H); MS (ESI) m/z: 421 (M+H⁺). Compound 2C was then reacted with hydrazine to produce Compound 2D. ¹H NMR (300 MHz, CD₃CN) δ 10.75 (s, br, 1H), 7.65 (s, br, 1H), 7.55 (q, 4H), 5.85 (s, br, 2H), 2.82 (m, 4H), 1.55 (m, 4H), 1.32 (m, 2H); MS (ESI) m/z: 323 (M+H⁺). Compound 2D was acylated with 2,6-difluoro-3-methylbenzoyl chloride Compound 1F in anhydrous pyridine to produce Compound 13 (85% yield). ¹H NMR (300 MHz, CDCl₃) δ 7.60-7.50 (m, 3H), 7.42 (d, 2H), 7.18 (t, 2H), 6.98 (s, br, 1H), 6.55 (s, br, 2H), 2.98 (m, 4H), 1.65 (m, 4H), 1.42 (m, 2H); MS (ESI) m/z: 363 (M+H⁺), 485 (M+Na⁺).

Using the procedure for Example 3, the following compounds were prepared by acylation of the intermediate Compound 2D using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 23 N³-[4-(1-piperidinylsulfonyl)phenyl]-1-(2- thiophene-2- thienylcarbonyl)-1H-1,2,4-triazole-3,5-diamine carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.02 (s, br, 1H), 8.40 mediated by (dd, 1H), 8.18 (dd, 1H), 7.92 (s, br, 2H), 7.88 (d, 2H), DIC/HOBt in DMF 7.58 (d, 2H), 7.32 (t, 1H), 2.88 (m, 4H), 1.55 (m, 4H), 1.35 (m, 2H); MS (ESI) m/z: 433 (M + H⁺), 455 (M + Na⁺) 24 1-[(3-methyl-2-thienyl)carbonyl]-N³-[4-(1- 3-methylthiophene- piperidinylsulfonyl)phenyl]-1H-1,2,4-triazole-3,5- 2-carboxylic acid diamine mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.02 (s, br, 1H), 8.02 DIC/HOBt in DMF (d, 1H), 7.95-7.80 (m, 4H), 7.68 (d, 2H), 7.18 (d, 1H), 2.88 (m, 4H), 2.68 (s, 3H), 1.55 (m, 4H), 1.35 (m, 2H); MS (ESI) m/z: 447 (M + H⁺), 469 (M + Na⁺)

EXAMPLE 3 4-[[5-amino-1-[(5-ethyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide (Cpd 32)

Hydrazine monohydrate (0.97 mL, 1.019 mol) and potassium hydroxide (1.12 g, 20 mmol) were added to a solution of 5-acetyl-thiophene-2-carboxylic acid (1.70 g, 10 mmol) in diethylene glycol (20 mL) and water (1 mL). The reaction mixture was stirred in an oil bath at 110° C. for 16 hrs, cooled to rt, acidified with 2N HCl and then extracted with methylene chloride (4×50 mL). Organic layers were combined, dried, concentrated and subjected to chromatography separation on silica gel (eluted with 10% methanol/methylene chloride) to produce 3-ethylthiophene-2-carboxylic acid Compound 3A as a pale yellow solid (1.161 g, 74%). ¹H NMR (300 MHz, CD₃OD) δ 7.59 (d, J 3.7, 1H), 6.87 (d, J 3.7, 1H), 2.88 (q, J 7.5, 1H), 1.32 (t, J 7.5, 3H); MS (ESI) m/z: 155 (M−H⁺). Using the procedure of Example 1, Compound 1E was acylated with Compound 3A mediated by DIC/HOBt in anhydrous DMF to produce Compound 32 (59% yield). 1H NMR (300 MHz, (CD₃)₂CO) δ 8.90 (s, br, 1H), 8.25 (d, 1H), 7.88 (q, 4H), 7.45 (s, br, 2H), 7.10 (d, 1H) 6.45 (s, br, 2H), 3.05 (q, 2H), 1.42 (t, 3H); MS (ESI) m/z: 393 (M+H⁺), 415 (M+Na⁺).

EXAMPLE 4 4-[[5-amino-1-[(3,5-dimethyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide (Cpd 33)

2.2 equivalents of 2.0 M LDA solution in heptane/THF/ethylbenzene (0.97 mL, 1.019 mol) was added to a solution of 3-methylthiophene-2-carboxylic acid (1.42 g, 10 mmol) in anhydrous THF (20 mL) at 0° C. The reaction mixture was stirred at 0° C. for 1.5 hr; and then methyl iodide (1.4 mL, 22 mmol) was added. The resulting mixture was stirred at 0° C. for an additional 2 hr, acidified with 2N HCl and extracted with methylene chloride (4×50 mL). The organic layers were then combined, concentrated and separated via HPLC to give 3,5-dimethylthiophene-2-carboxylic acid Compound 4A as a white powder. ¹H NMR (300 MHz, CD₃OD) δ 6.72 (s, 1H), 2.43 (s, 3H), 2.46 (s, 3H); MS (ESI) m/z: 155 (M−H⁺). Using the procedure of Example 1, Compound 1E was acylated with Compound 4A mediated by DIC/HOBt in anhydrous DMF to produce Compound 33 (73% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.88 (s, br, 1H), 7.85 (s, br, 2H), 7.78 (q, 4H), 7.18 (s, br, 2H), 6.92 (s, 1H), 2.58 (s, 3H), 2.55 (s, 3H); MS (ESI) m/z: 393 (M+H⁺), 415 (M+Na⁺).

EXAMPLE 5 4-[[5-amino-1-[2,6-difluoro-3-(1-hydroxyethyl)benzoyl]-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide (Cpd 58)

2′,4′-difluoroacetophenone (5 g, 32 mmol) was reacted with sodium borohydride (1.21 g) in THF (20 mL) and methanol (10 mL) for 1 hr. The resultant mixture was evaporated to dryness and partitioned between methylene chloride and water. The organic layer was separated, dried, and evaporated to give 1-(2′,4′-difluorophenyl)-ethanol as a colorless oil (4.86 g, 96%). ¹H NMR (300 MHz, CDCl₃) δ 7.48 (m, 1H), 6.85 (m, 1H), 6.75 (m, 1H), 5.15 (q, 1H), 2.0 (s, 1H), 1.5 (d, 3H). 1-(2′,4′-difluorophenyl)-ethanol (5.384 g, 34 mmol), t-butyltrimethylsilyl chloride (6.148 g, 40.8 mmol) and imidazole (5.567 g, 81.8 mmol) in DMF (60 mL) were combined and stirred at rt overnight. The resultant mixture was evaporated to dryness in vacuo, and then the residue was partitioned between methylene chloride and water. The organic layer was separated, dried and evaporated to give 1-(2′,4′-difluorophenyl)-ethyl t-butyltrimethylsilyl ether as a white solid (6.88 g, 74%). ¹H NMR (300 MHz, CDCl₃) δ 7.45 (q, 1H), 6.75 (m, 1H), 6.62 (m, 1H), 5.05 (q, 1H), 1.32 (d, 3H), 0.88 (s, 9H), 0.05 and 0.01 (each s, each 3H). A 1.6 M solution of n-butyl lithium in hexane (3.75 mL, 6 mmol) was added dropwise to a solution of 1-(2′,4′-difluorophenyl)-ethyl t-butyltrimethylsilyl ether (1.362 g, 5 mmol) in THF (60 mL) at −50° C. and was stirred at the same temperature for 3 h. The reaction mixture was poured to dry ice; and then was evaporated to dryness. The residue was partitioned between methylene chloride and water, acidified with acetic acid. The organic layer was separated, dried, and evaporated to give 2,6-difluoro-3-(1-t-butyltrimethylsilyloxyethyl)-benzoic acid Compound 5A as white solid (1.57 g, 99%). ¹H NMR (300 MHz, CDCl₃) δ 7.70 (q, 1H), 7.00 (t, 1H), 6.00 (br, 1H), 5.15 (q, 1H), 1.40 (d, 3H), 0.90 (s, 9H), 0.12 and 0.05 (each s, each 3H).

Using the procedure of Example 1, Compound 1E was acylated with Compound 5A mediated by DIC/HOBt in anhydrous DMF to provide 4-[[5-amino-1-(2,6-difluoro-3-(1-t-butyltrimethylsilyloxyethyl)-benzoyl)-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide Compound 5B (46% yield). ¹H NMR (300 MHz, CDCl₃) δ 7.72 (m, 3H), 7.38 (d, 2H), 7.02 (t, 1H), 6.80 (s, 1H), 6.45 (s, 2H), 5.15 (q, 1H), 4.68 (s,2H), 1.15 (d, 3H), 0.92 (s, 9H), 0.10 (s, 3H), 0.02 (s, 3H); MS (ESI) m/z: 553 (M+H⁺), 575 (M+Na⁺). 4-[[5-amino-2-(2,6-difluoro-3-(1-t-butyltrimethylsilyloxyethyl)-benzoyl)-2H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide (a minor regioisomer) was also isolated from the reaction mixture (192 mg, 34%). ¹H NMR (300 MHz, CDCl₃) δ 10.00 (s, 1H), 7.92 (d, 2H), 7.82 (d, 2H), 7.70 (q, 1H), 7.02 (t, 1H), 5.18 (q, 1H), 4.82 (s, 2H), 4.32 (s, 2H), 1.42 (d, 3H), 0.92 (s, 9H), 0.10 (s, 3H), 0.02 (s, 3H); MS (ESI) m/z: 553 (M+H⁺), 575 (M+Na⁺).

0.7 mL of 1.0 M TBAF solution in THF was added to a solution of 4-[[5-amino-1-(2,6-difluoro-3-(1-t-butyltrimethylsilyloxyethyl)-benzoyl)-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide Compound 5B (193 mg, 0.35 mol) in THF (10 mL). The reaction solution was stirred at rt for 1 hr and evaporated to dryness. The resultant residue was then subjected to column chromatography on silica gel with 20% methanol/methylene chloride to give the product Compound 58 as a white foam (90 mg, 59%). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.85 (s, 1H), 8.00 (s, 2H), 7.75 (m, 1H), 7.55 (m, 2H), 7.45 (m, 2H), 7.30 (t, 1H), 7.10 (s, 2H), 6.80 (s, 1H), 5.55 (d, 1H), 5.00 (m, 1H), 1.38 (d, 3H); MS (ESI) m/z: 421 (M+H⁺—H₂O), 439 (M+H⁺), 461 (M+Na⁺).

EXAMPLE 6 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonic Acid (Cpd 59)

The sodium salt of 4-sulfophenyl isothiocyanate Compound 6B, (prepared using the procedure of Example 1) was reacted with 1-amidino-3,5-dimethylpyrazole nitrate Compound 1C to produce Compound 6C which was reacted with hydrazine to produce Compound 6D. ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.1 (s, 1H), 8.75 (s, 1H), 7.3 (m, 4H), 5.85 (s, 2H); MS (ESI) m/z: 256 (M+H⁺). Using the procedure of Example 1, Compound 6D was acylated with 2,6-difluorobenzoyl chloride Compound 1F in anhydrous pyridine to produce compound 59 (4% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.35 (s, 1H), 7.95 (s, 2H), 7.82 (m, 2H), 7.45-7.25 (m, 5H); MS (ESI) m/z: 396 (M+H⁺).

Using the procedure for Example 6, the following compounds were prepared by acylation of the intermediate Compound 6D using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 60 4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H- 2,6-difluoro-3- 1,2,4-triazol-3-yl]amino]-benzenesulfonic acid methylbenzoyl ¹H NMR (300 MHz, CD₃OD) δ 7.62 (d, 2H), 7.50 (m, chloride in 1H), 7.38 (d, 2H), 7.05 (m, 1H), 2.30 (s, 3H); MS (ESI) anhydrous pyridine m/z: 410 (M + H⁺)

EXAMPLE 7 1-(2,6-Difluorobenzoyl)-N³-phenyl-1H-1,2,4-triazole-3,5-diamine (Cpd 61)

3-Anilino-5-amino-1,2,4-triazole Compound 7A (prepared using the procedure of Example 1) was acylated with 2,6-difluorolbenzoyl chloride Compound 1F in anhydrous pyridine to produce Compound 61 as a white solid (61% yield). ¹H NMR (300 MHz, CDCl₃) δ 7.80 (s, 1H), 7.45 (m, 1H), 7.30-7.15 (m, 4H), 7.05-6.85 (m, 5H), 6.70 (s, 2H); MS (ESI) m/z: 316 (M+H⁺), 338 (M+Na⁺).

Using the procedure for Example 7, the following compounds were prepared by acylation of Compound 7A using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 62 1-benzoyl-N³-phenyl-1H-1,2,4-triazole-3,5-diamine benzoyl chloride in ¹H NMR (300 MHz, CDCl₃) δ 8.30 (s, 2H), 7.65-7.40 anhydrous pyridine (m, 5H), 7.28 (d, 2H), 7.00 (t, 1H), 6.80 (s, 1H), 6.70 (s, 2H); MS (ESI) m/z: 280 (M + H⁺), 302 (M + Na⁺) 65 5-amino-N-phenyl-3-(phenylamino)-1H-1,2,4-triazole- phenyl isocyanate 1-carboxamide in anhydrous DMF ¹H NMR (300 MHz, (CD₃)₂CO) δ 9.20 (s, 1H), 8.20 (s, 1H), 7.70 (m, 4H), 7.35 (t, 2H), 7.25 (t, 2H), 7.15 (t, 1H), 7.98 (s, 2H), 6.88 (t, 1H); MS (ESI) m/z: 295 (M + H⁺), 317 (M + Na⁺) 124 1-(2,6-difluorobenzoyl)-N⁵-phenyl-1H-1,2,4-triazole- — 3,5-diamine (minor regioisomer of Cpd 61) ¹H NMR (300 MHz, CDCl₃) δ 9.80 (s, 1H), 7.65 (d, 2H), 7.60-7.32 (m, 3H), 7.25-7.00 (m, 3H), 4.40 (s, 2H); MS (ESI) m/z: 316 (M + H⁺), 338 (M + Na⁺) 125 1-benzoyl-N⁵-phenyl-1H-1,2,4-triazole-3,5-diamine — (minor regioisomer of Cpd 62) ¹H NMR (300 MHz, CDCl₃) δ 10.20 (s, 1H), 8.18 (d, 2H), 7.72-7.30 (m, 7H), 7.15 (t, 1H), 4.30 (s, 2H); MS (ESI) m/z: 280 (M + H⁺), 302 (M + Na⁺)

EXAMPLE 8 N³-(3-chlorophenyl)-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazole-3,5-diamine (Cpd 63)

3-(3-Chloroanilino)-5-amino-1,2,4-triazole Compound 8A (prepared using the procedure of Example 1) was acylated with 2,6-difluorobenzoyl chloride Compound 1F in anhydrous pyridine to produce Compound 63 as a pale yellow solid (66% yield). 1H NMR (300 MHz, CDCl₃) δ 7.6-7.50 (m, 2H), 7.15-6.80 (m, 6H), 6.60 (s, 2H); MS (ESI) m/z: 350 (M+H⁺), 372 (M+Na⁺).

Using the procedure for Example 8, the following compounds were prepared by acylation of the intermediate Compound 8A using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 64 1-benzoyl-N³-(3-chlorophenyl)-1H-1,2,4-triazole-3,5- benzoyl chloride in diamine anhydrous pyridine ¹H NMR (300 MHz, (CD₃)₂CO) δ 8.58 (s, 1H), 8.30 (d, 2H), 8.00 (m, 1H), 7.75-7.25 (m, 6H), 6.90 (d, 1H); MS (ESI) m/z: 314 (M + H⁺), 336 (M + Na⁺) 126 N⁵-(3-chlorophenyl)-1-(2,6-difluorobenzoyl)-1H-1,2,4- triazole-3,5-diamine (minor regioisomer of Cpd 63)¹H NMR (300 MHz, CDCl₃) δ 9.90 (s, 1H), 7.90 (s, 1H), 7.58-6.95 (m, 7H), 4.35 (s, 2H); MS (ESI) m/z: 350 (M + H⁺), 472 (M + Na⁺) 127 1-benzoyl-N⁵-(3-chlorophenyl)-1H-1,2,4-triazole-3,5- diamine (minor regioisomer of Cpd 64) ¹H NMR (300 MHz, (CD₃)₂CO) δ 10.30 (s, 1H), 8.20 (d, 2H), 8.15 (m, 1H), 7.70-7.60 (m, 2H), 7.55 (t, 2H), 7.35 (t, 1H), 7.10 (d, 1H), 5.60 (s, 2H); MS (ESI) m/z: 314 (M + H⁺), 336 (M + Na⁺)

EXAMPLE 9 1-(2,6-difluorobenzoyl)-N³-[4-(4-methyl-1-piperazinyl)phenyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 71)

4-(4-Methylpiperazino)-phenyl isothiocyanate was reacted with 1 equivalent of 3,5-dimethylpyrazole-1-carboxamidine nitrate and 1.1 equivalents of potassium t-butoxide in DMSO at 55° C. for 4 hours. 10 equivalents of hydrazine were added and stirred at 55° C. for 4 hrs. Subsequent concentration, dissolution in methanol, filtering of impurities and concentration gave 3-(4-methylpiperazino)-anilino-5-amino-1,2,4-triazole Compound 9A (87% yield). ¹H NMR (400 MHz, (CD₃)₂SO) δ 9.05 (s,1H), 8.60 (s, 1H), 7.35 (d, 2H), 6.77 (d, 2H), 5.70 (s, 2H), 2.97 (m, 4H), 2.48 (m, 4H), 2.23 (s, 3H); MS (ESI) m/z: 274 (M+H⁺). 3-(4-methylpiperazino)-anilino-5-amino-1,2,4-triazole Compound 9A was acylated with 2,6-difluoro benzoyl chloride Compound 1F in anhydrous pyridine to produce compound 71 (30% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.07 (s, 1H), 7.88 (s, 1H), 7.72-7.66 (m, 1H), 7.32 (t, 1H), 7.25-7.17 (m, 2H), 6.97-6.92 (m, 1H), 6.71 (d, 1H), 3.39-3.35 (m, 2H), 3.17 (s, 3H), 3.00-2.97 (m, 4H), 2.51-2.46 (m, 4H); MS (ESI) m/z: 414 (M+H⁺).

Using the procedure for Example 9, the following compounds were prepared by acylation of the intermediate Compound 9A using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 72 1-(2,6-difluoro-3-methylbenzoyl)-N³-[4-(4-methyl- 2,6-difluoro-3-methyl 1-piperazinyl)phenyl]-1H-1,2,4-triazole-3,5-diamine benzoyl chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.05(s, 1H), 7.87 anhydrous pyridine (s, 1H), 7.59-7.51 (m, 1H), 7.24-7.18 (m, 2H), 6.72 (d, 2H), 3.35 (s, 2H), 2.99-2.96 (m, 4H), 2.45-2.42 (m, 4H), 2.28 (s, 3H); MS (ESI) m/z: 428 (M + H⁺) 73 N³-[4-(4-methyl-1-piperazinyl)phenyl]-1-[(3-methyl- 3-methyl-2-thiophene 2-thienyl)carbonyl]-1H-1,2,4-triazole-3,5-diamine carboxylic acid, ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.13 (s, 1H), 7.77 mediated by DIC/HOBt (s, 1H), 7.58-7.55 (m, 2H), 7.38-7.26 (m, 1H), 6.92 in anhydrous DMF (d, 2H), 3.17 (s, 3H), 3.09-3.07 (m, 4H), 2.62 (s, 4H), 2.35 (s, 3H); MS (ESI) m/z: 398 (M + H⁺) 74 1-[(3,5-dimethyl-2-thienyl)carbonyl]-N³-[4-(4- 3,5-dimethyl-2- methyl-1-piperazinyl)phenyl]-1H-1,2,4-triazole-3,5- thiophene carboxylic diamine acid, mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.11 (s, 1H), 7.73 DIC/HOBt in (s, 2H), 7.59-7.54 (m, 2H), 7.38-7.26 (m, 1H), 6.94 anhydrous DMF (d, 2H), 3.16-3.13 (m, 4H), 2.80-2.78 (m, 4H), 2.56 (s, 3H), 2.53 (s, 3H), 2.46 (s, 3H); MS (ESI) m/z: 412 (M + H⁺) 75 1-[(5-ethyl-2-thienyl)carbonyl]-N³-[4-(4-methyl-1- 5-ethyl-2-thiophene piperazinyl)phenyl]-1H-1,2,4-triazole-3,5-diamine carboxylic acid, ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.17 (s, 1H), 7.78 mediated by DIC/HOBt (s, 1H), 7.51 (d, 2H), 7.35-7.24 (m, 3H), 7.08 (d, in anhydrous DMF 2H), 3.14-3.12 (m, 4H), 2.96 (q, 2H), 2.76-2.73 (m, 4H), 2.43 (s, 3H), 1.34 (t, 3H); MS (ESI) m/z: 412 (M + H⁺)

EXAMPLE 10 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3-yl]amino]-N-ethyl-benzenesulfonamide (Cpd 76)

Compound 1 (100 mg, 0.254 mmol) was reacted with 1.2 equivalents of ethyl trifluoromethanesulfonate (Et-TFMS) (40 μL, 0.305 mmol), and 1.5 equivalents of potassium t-butoxide (K-t-BO) (0.38 mmol, 381 μL of a 1.0 M THF solution) in THF (5 mL) at 50° C., stirring for 16 hours. Purification of the reaction mixture by column chromatography in 10% methanol/methylene chloride gave the product Compound 76 (27.1 mg, 25% yield). ¹H NMR (400 MHz, (CD₃)₂SO) δ 9.87 (s,1H), 8.00 (s, 2H), 7.76-7.68 (m, 1H), 7.55-7.48 (m, 4H), 7.34 (t, 211), 7.22 (t, 1H), 2.73-2.67 (m, 2H) 0.94 (t, 3H); MS (ESI) m/z: 423 (M+H⁺).

EXAMPLE 12 N³-methyl-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 79)

Using the procedure of Example 1,3,5-diamino-1,2,4-triazole Compound 12A was acylated with 3-methylthiophene-2-carboxylic acid Compound 12B mediated by DIC/HOBt in anhydrous DMF to produce Compound 41 (72% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 7.88 (d, J=4.5, 1H), 7.59 (s, 2H), 7.05 (d, J=4.8, 1H), 5.78 (s, 2H), 2.55 (s, 3H); MS (ESI) m/z: 224.1 (M+H⁺), 245.9 (M+Na⁺). Compound 41 (0.45 mmol, 100 mg) was reacted with 3 equivalents of iodomethane (1.34 mmol, 84 uL) and 1.1 equivalents of potassium t-butoxide (0.49 mmol, 493 uL of 1.0 M THF solution) in THF (5 mL), stirring 16 hours at 25° C. Purification by column chromatography (eluting with 10% methanol/dichloromethane) gave the product Compound 79 (7.7 mg, 7% yield). ¹H NMR (400 MHz, (CD₃)₂SO) δ 9.80 (s, 1H), 7.60 (d,1H), 6.96 (d, 1H), 6.17 (s, 2H), 3.47 (s, 3H), 2.40 (s, 3H); MS (ESI) m/z: 238 (M+H⁺), 260 (M+Na⁺).

EXAMPLE 13 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3-yl]amino]-N-methyl-benzenesulfonamide (Cpd 80)

t-BuOK (23.1 mL, 1.0 M solution in t-BuOH, 23.1 mmol) was added dropwise to a solution of 4-isothiocyanato-N-methylbenzenesulfonamide Compound 13B (prepared using the procedure of Example 1) (4.8 g, 21.0 mmol) and 2,5-dimethylpyrazole-1-carboximidine nitrate Compound 1C (4.2 g, 21.0 mmol) in DMF (20 mL). The mixture was heated to 60° C. for 2 h, then poured into ice. The precipitate was collected by filtration and washed with water, then air dried to afford 4-[3-(3,5-dimethylpyrazol-1-yliminomethyl)thioureido]-N-methylbenzenesulfonamide Compound 13C as a yellow solid (7.3 g, 95% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 8.01 (s, 1H), 7.71 (m, 4H), 6.15 (s, 1H), 2.40 (s, 3H), 2.22 (s, 6H); MS (ESI) m/z: 367 (M+H⁺). Hydrazine (3.3 g, 110.0 mmol) at 0° C. was added to a suspension of 4-[3-(3,5-dimethylpyrazol-1-yliminomethyl)thioureido]-N-methylbenzenesulfonamide Compound 13C (2.0 g, 5.5 mmol) in THF (20 mL). The mixture was heated to 60° C. for 2 hrs, then poured into ice. The precipitate was collected by filtration, washed with water and CH₂Cl₂, then air dried to produce Compound 13D as a white solid (1.3 g, 87% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.36 (s, 1H), 9.31 (s, 1H), 7.63 (q, 4H), 7.09 (q, 1H), 6.05 (s, 2H), 2.39 (d,3H); MS (ESI) m/z: 269 (M+H⁺). Using the procedure of Example 1, Compound 13D was acylated with 2,6-difluorobenzoyl chloride Compound 1F in anhydrous pyridine to produce Compound 80 (80% yield). ¹H NMR (300 MHz, CD₃OD) δ 7.64 (m, 1H), 7.63 (d, 2H), 7.53 (d, 2H), 7.15 (t, 2H), 2.43 (s, 3H); MS (ESI) m/z: 409 (M+H⁺).

Using the procedure for Example 13, the following compounds were prepared by acylation of the intermediate Compound 13D using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 81 4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H- 2,6-difluoro-3- 1,2,4-triazol-3-yl]amino]-N-methyl- methylbenzoyl benzenesulfonamide chloride in anhydrous ¹H NMR (300 MHz, CD₃OD) δ 7.55 (d, 2H), 7.48- pyridine 7.44 (m, 1H), 7.46 (d, 2H), 2.42 (s, 3H), 2.25 (s, 3H); MS (ESI) m/z: 423 (M + H⁺) 82 4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H- 3-methylthiophene-2- 1,2,4-triazol-3-yl]amino]-N-methyl- carboxylic acid benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.92 (s, 1H), 8.03 DIC/HOBt in DMF (d, 1H), 7.81 (d, 2H), 7.69 (d, 2H), 7.14 (m, 2H), 2.62 (s, 3H), 2.55 (s, 3H); MS (ESI) m/z: 393 (M + H⁺) 83 4-[[5-amino-1-[(3,5-dimethyl-2-thienyl)carbonyl]- 3,5- 1H-1,2,4-triazol-3-yl]amino]-N-methyl- dimethylthiophene-2- benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.89 (s, 1H), 8.09 mediated by (d, 1H), 7.74 (d, 2H), 7.63 (d, 2H), 7.02 (d, 1H), 2.94 DIC/HOBt in DMF (q, 2H), 2.32 (s, 3H), 1.33 (t, 3H); MS (ESI) m/z: 407 (M + H⁺) 84 4-[[5-amino-1-[(5-ethyl-2-thienyl)carbonyl]-1H- 5-ethylthiophene-2- 1,2,4-triazol-3-yl]amino]-N-methyl- carboxylic acid benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.65 (s, 1H), 7.64 DIC/HOBt in DMF (d, 1H), 7.50 (d, 2H), 7.69 (d, 2H), 6.66 (s, 1H), 2.36 (s, 3H), 2.34 (s, 3H), 2.12 (s, 3H); MS (ESI) m/z: 407 (M + H⁺)

EXAMPLE 14 1-[(3,5-dimethyl-2-thienyl)carbonyl]-N³-[4-(1H-imidazol-1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 85)

4-Isothiocyanato-N,N-dimethylbenzenesulfonamide Compound 14B (prepared using the procedure of Example 1) (1.8 g, 7.4 mmol) was reacted with 2,5-dimethylpyrazole-1-carboximidine nitrate Compound 1C (1.5 g, 7.4 mmol) and t-BuOK (7.4 mL, 1.0 M solu in t-BuOH, 7.4 mmol) to produce 4-[3-(3,5-dimethylpyrazol-1-yliminomethyl)thioureido]-N,N-dimethylbenzenesulfonamide Compound 14C as a yellow solid (2.5 g, 89% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.05 (s, 1H), 8.91 (s, 1H), 7.67 (m, 4H), 6.15 (s, 1H), 2.57 (s, 6H), 2.18 (s, 6H); MS (ESI) m/z: 381 (M+H⁺). Compound 14C (2.5 g, 6.6 mmol) was reacted with hydrazine (4.2 g, 132.0 mmol) to produce 1.7 g (90%) of Compound 14D as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.47 (s, 1H), 7.81 (d, 2H), 7.75 (d, 2H), 6.10 (s 1H), 2.67 (s, 6H); MS (ESI) m/z: 283 (M+H⁺). Compound 14D was acylated with 3,5-dimethylthiophene-2-carboxylic acid Compound 1F mediated by DIC/HOBt in DMF to produce Compound 85 (52% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.93 (s, 1H), 7.88 (d, 2H), 7.85 (s, 1H), 7.65 (d, 2H), 6.90 (s, 1H), 2.60 (s, 6H), 2.56 (s, 3H), 2.54 (s, 3H); MS (ESI) m/z: 421 (M+H⁺).

Using the procedure for Example 14, the following compounds were prepared by acylation of the intermediate Compound 14D using the indicated starting material in place of Compound 14E and reagent(s):

Cpd Name/Data Starting Mat'l 86 4-[[5-amino-1-[(5-ethyl-2-thienyl)carbonyl]-1H-1,2,4- 5-ethylthiophene-2- triazol-3-yl]amino]-N,N-dimethyl-benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.03 (s, 1H), 8.13 (d, mediated by 1H), 7.91 (s, 1H), 7.86 (d, 2H), 7.66 (d, 2H), 7.10 (d, DIC/HOBt in DMF 2H), 2.95 (q, 2H), 2.56 (s, 6H), 1.32 (t, 3H); MS (ESI) m/z: 421 (M + H⁺) 87 4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4- 3-methylthiophene- triazol-3-yl]amino]-N,N-dimethyl-benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.01 (s, 1H), 8.05 (d, mediated by 1H), 7.86 (d, 3H), 7.69 (d, 2H), 7.13 (d, 1H), 2.63 (s, DIC/HOBt in DMF 3H), 2.55 (s, 6H); MS (ESI) m/z: 407 (M + H⁺) 88 4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H- 2,6-difluoro-3- 1,2,4-triazol-3-yl]amino]-N,N-dimethyl- methylbenzoyl benzenesulfonamide chloride in ¹H NMR (300 MHz, CDCl₃) δ 7.79 (s, 1H), 7.55 (d, anhydrous pyridine 2H), 7.40 (d, 2H), 7.35 (m, 1H), 6.95 (s, 2H), 6.92 (m, 1H), 2.65 (s, 6H), 2.27 (s, 3H); MS (ESI) m/z: 437 (M + H⁺) 89 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3- 2,6-difluorobenzoyl yl]amino]-N,N-dimethyl-benzenesulfonamide chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.74 (s, 1H), 7.77 (s, anhydrous pyridine 2H), 7.50-7.40 (m, 1H), 7.30-7.20 (m, 4H), 7.10 (m, 2H), 2.25 (s, 6H); MS (ESI) m/z: 423 (M + H⁺)

EXAMPLE 15 1-[(5-ethyl-2-thienyl)carbonyl]-N³-[4-(1H-imidazol-1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 90)

Using the published procedure (Webb et al., J. Heterocyclic Chem., 1987, 24, 275-278), 4-imidazol-1-yl-aniline (0.50 g, 3.14 mmol), diphenyl cyanocarbonimidate (0.75 g, 3.14 mmol) and THF (30 mL) were combined in a nitrogen purged flask. The mixture was refluxed for 2 hrs, then cooled down to ice temperature and hydrazine (31.4 mL, 1.0 M solution in THF, 31.4 mmol) was added dropwise. The mixture was then refluxed for 2 hrs. The precipitate was filtered and collected, washed with ethyl acetate and air dried to produce the intermediate Compound 15A (0.60 g, 79%). ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.15 (s, 1H), 8.85 (s, 1H), 8.05 (s, 1H), 7.57 (s, 1H), 7.48 (d, 2H), 7.35 (d, 2H), 7.04 (s, 1H), 5.85 (s, 2H); MS (ESI) m/z: 242 (M+H⁺). Using the procedure of Example 1, Compound 15A was acylated with 5-ethylthiophene-2-carboxylic acid Compound 15B mediated by DIC/HOBt in DMF to provide Compound 90 (59% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.63 (s, 1H), 8.14 (d, 1H), 7.85-7.70 (m, 7H), 7.56-7.53 (m, 2H), 7.07 (d, 2H), 2.95 (q, 2H), 1.33 (t, 3H); MS (ESI) m/z: 380 (M+H⁺).

Using the procedure for Example 15, the following compounds were prepared by acylation of the intermediate Compound 15A using the indicated starting material in place of Compound 15B and reagent(s):

Cpd Name/Data Starting Mat'l 91 N³-[4-(1H-imidazol-1-yl)phenyl]-1-[(3-methyl-2- 3-methylthiophene- thienyl)carbonyl]-1H-1,2,4-triazole-3,5-diamine 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.62 (s, 1H), 7.97 (d, mediated by 1H), 7.92 (s, 1H), 7.82-7.72 (m, 5H), 7.56-7.53 (m, 2H), DIC/HOBt in DMF 7.11 (d, 1H), 2.61 (s, 3H); MS (ESI) m/z: 366 (M + H⁺) 92 1-[(3,5-dimethyl-2-thienyl)carbonyl]-N³-[4-(1H- 3,5- imidazol-1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine dimethylthiophene- ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.51 (s, 1H), 8.15 (s, 2-carboxylic acid 1H), 7.75 (m, 4H), 7.61 (s, 1H), 7.53 (d, 2H), 7.05 (s, mediated by 1H), 6.85 (s, 1H), 2.53 (s, 3H), 2.52 (s, 3H); MS (ESI) DIC/HOBt in DMF m/z: 380 (M + H⁺) 93 1-(2,6-difluorobenzoyl)-N³-[4-(1H-imidazol-1- 2,6-difluorobenzoyl yl)phenyl]-1H-1,2,4-triazole-3,5-diamine chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.52 (s, 1H), 8.06 (s, anhydrous pyridine 1H), 7.93 (s, 1H), 7.70 (p, 1H), 7.57 (s, 1H), 7.45 (d, 2H), 7.36 (d, 2H), 7.30 (t, 2H), 7.01 (s, 1H); MS (ESI) m/z: 382 (M + H⁺) 94 1-(2,6-difluoro-3-methylbenzoyl)-N³-[4-(1H-imidazol-1- 2,6-difluoro-3- yl)phenyl]-1H-1,2,4-triazole-3,5-diamine methylbenzoyl ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.52 (s, 1H), 8.08 (s, chloride in 1H), 7.93 (s, 1H), 7.57 (s, 1H), 7.53 (m, 1H), 7.42 (d, anhydrous pyridine 2H), 7.35 (d, 2H), 7.18 (t, 1H), 7.02 (s, 1H), 2.25 (s, 3H); MS (ESI) m/z: 396 (M + H⁺)

EXAMPLE 16 1-(2,6-difluoro-3-methylbenzoyl)-N³-[4-(1H-1,2,4-triazol-1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 95)

Using the procedure of Example 15, 4-(1,2,4-triazol-1-yl)-aniline (0.35 g, 2.18 mmol), diphenyl cyanocarbonimidate (0.52 g, 2.18 mmol) and hydrazine (21.8 mL, 1.0 M solution in THF, 21.8 mmol) were reacted to produce Compound 16D (0.40 g, 78% yield) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.21 (s, 1H), 9.06 (s, 1H), 8.92 (s, 1H), 8.13 (s, 1H), 7.61 (m 4H), 5.87 (s, 2H); MS (ESI) m/z: 243 (M+H⁺). Using the procedure of Example 1, Compound 16D was acylated with 2,6-difluoro-3-methylbenzoyl chloride Compound 16B in anhydrous pyridine to produce Compound 95 (51% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.62 (s, 1H), 9.11 (s, 1H), 8.12 (s, 1H), 7.91 (s, 1H), 7.56 (d, 2H), 7.60-7.50 (q, 1H), 7.45 (d, 2H), 7.16 (t, 1H), 2.25 (s, 3H); MS (ESI) m/z: 397 (M+H⁺).

Using the procedure for Example 16, the following compounds were prepared by acylation of the intermediate Compound 16A using the indicated starting material in place of Compound 16B and reagent(s):

Cpd Name/Data Starting Mat'l 96 1-(2,6-difluorobenzoyl)-N³-[4-(1H-1,2,4-triazol-1- 2,6-difluorobenzoyl yl)phenyl]-1H-1,2,4-triazole-3,5-diamine chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.61 (s, 1H), 9.05 (s, anhydrous pyridine 1H), 8.07 (s, 1H), 7.85 (s, 2H), 7.63 (p, 1H), 7.53 (d, 2H), 7.41 (d, 2H), 7.30 (t, 2H), 7.29 (t, 2H); MS (ESI) m/z: 383 (M + H⁺) 97 1-[(5-ethyl-2-thienyl)carbonyl]-N³-[4-(1H-1,2,4-triazol- 5-ethylthiophene-2- 1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.72 (s, 1H), 9.15 (s, mediated by 1H), 8.17 (s, 1H), 8.16 (d, 1H), 7.78 (s, 2H), 7.77 (d, DIC/HOBt in DMF 2H), 7.72 (d, 2H), 7.04 (d, 1H), 2.96 (q, 2H), 1.33 (t, 3H); MS (ESI) m/z: 381 (M + H⁺) 98 1-[(3,5-dimethyl-2-thienyl)carbonyl]-N³-[4-(1H-1,2,4- 3,5-dimethylthiophene- triazol-1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.67 (s, 1H), 9.15 (s, mediated by 1H), 8.18 (s, 1H), 7.75 (m, 6H), 6.89 (s, 1H), 2.52 (s, DIC/HOBt in DMF 3H), 2.51 (s, 3H); MS (ESI) m/z: 381 (M + H⁺) 99 1-[(3-methyl-2-thienyl)carbonyl]-N³-[4-(1H-1,2,4- 3-methylthiophene- triazol-1-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.68 (s, 1H), 9.13 (s, mediated by 1H), 8.16 (s, 1H), 7.99 (d, 1H), 7.77 (m, 6H), 7.12 (d, DIC/HOBt in DMF 1H); MS (ESI) m/z: 367 (M + H⁺)

EXAMPLE 17 1-(2,6-difluorobenzoyl)-N³-[4-(4H-1,2,4-triazol-4-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 100)

Using the procedure of Example 15, 4-(1,3,4-triazol-1-yl)-aniline (1.35 g, 8.43 mmol), diphenyl cyanocarbonimidate (2.00 g, 8.43 mmol) and hydrazine (84.3 mL, 1.0 M solution in THF, 84.3 mmol) were reacted to provide Compound 17A (1.10 g, 77% yield) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 8.90 (s, 2H), 7.62 (d, 2H), 7.36 (d, 2H), 5.82 (s, 2H); MS (ESI) m/z: 243 (M+H⁺). Using the procedure of Example 1, Compound 17A was acylated with 2,6-difluorobenzoyl chloride Compound 1F in anhydrous pyridine to provide Compound 100 (36% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.61 (s, 1H), 8.98 (s, 2H), 7.96 (s, 2H), 7.67 (p, 1H), 7.47 (d, 2H), 7.42 (d, 2H), 7.32 (t, 2H); MS (ESI) m/z: 383 (M+H⁺).

Using the procedure for Example 17, the following compounds were prepared by acylation of the intermediate Compound 17D using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'l 101 1-(2,6-difluoro-3-methylbenzoyl)-N³-[4-(4H-1,2,4- 2,6-difluoro-3- triazol-4-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine methylbenzoyl ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.61 (s, 1H), 8.94 (s, chloride in 2H), 7.91 (s, 2H), 7.55 (q, 1H), 7.43 (q, 4H), 7.18 (t, anhydrous pyridine 1H); MS (ESI) m/z: 397 (M + H⁺) 102 1-[(3-methyl-2-thienyl)carbonyl]-N³-[4-(4H-1,2,4- 3-methylthiophene- triazol-4-yl)phenyl]-1H-1,2,4-triazole-3,5-diamine 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.22 (s, 1H), 9.04 (s, mediated by 2H), 7.95 (m, 3H), 7.67 (d, 2H), 7.07 (d, 1H), 6.13 (s, DIC/HOBt in DMF 2H); MS (ESI) m/z: 367 (M + H⁺)

EXAMPLE 18 4-[[5-amino-1-[(5-ethyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]-N-[2-(dimethylamino)ethyl]-benzenesulfonamide (Cpd 103)

Using the procedure of Example 15, 4-amino-N-(2-dimethylaminoethyl)-benzenesulfonamide (2.00 g, 8.22 mmol), diphenyl cyanocarbonimidate (2.00 g, 8.22 mmol) and hydrazine (82.3 mL, 1.0 M solution in THF, 82.3 mmol) were reacted to produce Compound 18A (1.35 g, 50% yield) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.22 (s, 1H), 8.43 (s, 1H), 7.55 (m, 4H), 7.02 (s, 1H), 5.91 (s, 2H), 2.71 (t, 2H), 2.15 (t, 2H), 2.05 (s, 6H); MS (ESI) m/z: 326 (M+H⁺). Using the procedure of Example 1, Compound 18A was acylated with 5-ethylthiophene-2-carboxylic acid Compound 15B mediated by DIC/HOBt in DMF to produce Compound 103 (40% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 10.02 (s, 1H), 8.13 (d, 1H), 7.88 (s, 1H), 1H), 7.75 (d, 2H), 7.71 (d, 2H), 7.07 (d, 1H), 7.01 (s, 2H), 2.95 (q, 2H), 2.75 (t, 2H), 2.20 (t, 2H), 2.04 (s, 6H), 1.35 (t, 3H); MS (ESI) m/z: 464 (M+H⁺).

Using the procedure for Example 18, the following compounds were prepared by acylation of the intermediate Compound 18A using the indicated starting material in place of Compound 15B and reagent(s):

Cpd Name/Data Starting Mat'l 104 4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4- 3-methylthiophene- triazol-3-yl]amino]-N-[2-(dimethylamino)ethyl]- 2-carboxylic acid benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.89 (s, 1H), 8.04 (d, DIC/HOBt in DMF 1H), 7.83 (s, 1H), 7.79 (d, 2H), 7.71 (d, 2H), 7.15 (s, 2H), 7.08 (d, 1H), 2.76 (t, 2H), 2.61 (s, 3H), 2.21 (t, 2H), 2.07 (s, 6H); MS (ESI) m/z: 450 (M + H⁺) 105 4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H- 2,6-difluoro-3- 1,2,4-triazol-3-yl]amino]-N-[2-(dimethylamino)ethyl]- methylbenzoyl benzenesulfonamide chloride in ¹H NMR (300 MHz, CD₃OD) δ 7.57 (d, 2H), 7.45 (m, anhydrous pyridine 3H), 7.00 (t, 1H), 2.86 (t, 2H), 2.32 (t, 2H), 2.25 (s, 3H), 2.11 (s, 6H); MS (ESI) m/z: 480 (M + H⁺) 106 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3- 2,6-difluorobenzoyl yl]amino]-N-[2-(dimethylamino)ethyl]- chloride in benzenesulfonamide anhydrous pyridine ¹H NMR (300 MHz, CD₃OD) δ 7.60 (m, 1H), 7.55 (d, 2H), 7.45 (d, 2H), 7.11 (t, 1H), 2.87 (t, 2H), 2.32 (t, 2H), 2.12 (s, 6H); MS (ESI) m/z: 466 (M + H⁺) 107 4-[[5-amino-1-[(3,5-dimethyl-2-thienyl)carbonyl]-1H- 3,5- 1,2,4-triazol-3-yl]amino]-N-[2-(dimethylamino)ethyl]- dimethylthiophene- benzenesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.89 (s, 1H), 7.81 (m, mediated by 4H), 7.71 (d, 2H), 7.22 (s, 1H), 6.86 (s, 1H), 2.79 (t, DIC/HOBt in DMF 2H), 2.63 (s, 3H), 2.61 (s, 3H), 2.21 (t, 6H), 2.06 (s, 6H); MS (ESI) m/z: 464 (M + H⁺)

EXAMPLE 19 N-[4-[[5-amino-1-[(3,5-dimethyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-5 yl]amino]phenyl]-methanesulfonamide (Cpd 108)

Using the procedure of Example 15, N-(4-aminophenyl)methanesulfonamide (2.00 g, 10.70 mmol), diphenyl cyanocarbonimidate (2.60 g, 10.70 mmol), and hydrazine (107.0 mL, 1.0 M solution in THF, 107.0 mmol) were reacted to produce Compound 19A (1.30 g, 45% yield) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 8.80 (s, 1H), 8.55 (s, 1H), 7.43 (d, 2H), 6.96 (d, 2H), 5.75 (s, 2H), 2.82 (s, 3H); MS (ESI) m/z: 269 (M+H⁺). Using the procedure of Example 1, Compound 19A was acylated with 3,5-dimethylthiophene-2-carboxylic acid Compound 19B mediated by DIC/HOBt in DMF to provide Compound 108 (11% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.30 (s, 1H), 9.25 (s, 1H), 7.70 (s, 1H), 7.61 (d, 2H), 7.12 (d, 2H), 6.83 (s, 1H), 2.87 (s, 3H), 2.50 (s, 3H); MS (ESI) m/z: 407 (M+H⁺).

Using the procedure for Example 19, the following compounds were prepared by acylation of the intermediate Compound 19A using the indicated starting material in place of Compound 14E and reagent(s):

Cpd Name/Data Starting Mat'l 109 N-[4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H- 3-methylthiophene- 1,2,4-triazol-3-yl]amino]phenyl]-methanesulfonamide 2-carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.35 (s, 1H), 9.30 (s, mediated by 1H), 8.01 (d, 1H), 7.75 (s, 1H), 7.62 (d, 2H), 7.12 (m, DIC/HOBt in DMF 3H), 6.83 (s, 1H), 2.89 (s, 3H), 2.59 (s, 3H); MS (ESI) m/z: 393 (M + H⁺) 110 N-[4-[[5-amino-1-[(5-ethyl-2-thienyl)carbonyl]-1H- 5-ethylthiophene-2- 1,2,4-triazol-3-yl]amino]phenyl]-methanesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.37 (s, 1H), 9.30 (s, mediated by 1H), 8.12 (d, 1H), 7.74 (s, 1H), 7.62(d, 2H), 7.12 (d, DIC/HOBt in DMF 2H), 7.03 (d, 1H), 2.95 (q, 2H), 2.89 (s, 3H), 1.35 (t, 3H); MS (ESI) m/z: 407 (M + H⁺) 111 N-[4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4- 2,6-difluorobenzoyl triazol-3-yl]amino]phenyl]-methanesulfonamide chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.32 (s, 1H), 9.21 (s, anhydrous pyridine 1H), 7.88 (s, 2H), 7.64 (p, 1H), 7.25 (m, 4H), 6.92 (d, 2H), 2.82 (s, 3H); MS (ESI) m/z: 409 (M + H⁺) 112 N-[4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H- 2,6-difluoro-3- 1,2,4-triazol-3-yl]amino]phenyl]-methanesulfonamide methylbenzoyl ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.33 (s, 1H), 7.88 (s, chloride in 2H), 7.54 (q, 1H), 7.25 (d, 2H), 7.16 (t, 1H), 6.92 (d, anhydrous pyridine 2H), 2.82 (s, 3H), 2.25 (s, 3H); MS (ESI) m/z: 423 (M + H⁺)

EXAMPLE 20 1-[4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]phenyl]-2-imidazolidinone (Cpd 113)

Using the procedure of Example 15, 1-(4-aminophenyl)imidazolidin-2-one (0.24 g, 1.35 mmol), diphenyl cyanocarbonimidate (0.32 g, 1.35 mmol) and hydrazine (13.5 mL, 1.0 M solution in THF, 13.5 mmol) were reacted to produce Compound 20A (0.28 g, 80%) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.05 (s, 1H), 8.42 (s, 1H), 7.35 (d, 2H), 7.24 (d, 2H), 6.65 (s, 1H), 5.78 (s, 2H), 3.74 (t, 2H), 3.32 (t, 2H); MS (ESI) m/z: 260 (M+H⁺). Using the procedure of Example 1, Compound 20A was acylated with 3-methylthiophene-2-carboxylic acid Compound 20B mediated by DIC/HOBt in DMF to provide Compound 113 (41% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.21 (s, 1H), 8.01 (d, 1H), 7.68 (s, 1H), 7.55 (d, 2H), 7.43 (d, 2H), 7.11 (d, 1H), 6.71 (s, 1H), 3.83 (q, 2H), 3.37 (q, 2H), 2.63 (s, 3H); MS (ESI) m/z: 384 (M+H⁺).

Using the procedure for Example 20, the following compounds were prepared by acylation of the intermediate Compound 20A using the indicated starting material in place of Compound 20B and reagent(s):

Cpd Name/Data Starting Mat'l 114 1-[4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H- 2,6-difluoro-3- 1,2,4-triazol-3-yl]amino]phenyl]-2-imidazolidinone methylbenzoyl ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.12 (s, 1H), 7.82 (s, chloride in 2H), 7.50 (m, 1H), 7.21 (m, 4H), 7.20 (m, 1H), 6.70 (s, anhydrous pyridine 1H), 3.72 (t, 2H), 3.28 (t, 3H), 2.21 (s, 3H); MS (ESI) m/z: 414 (M + H⁺) 115 1-[4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4- 2,6-difluorobenzoyl triazol-3-yl]amino]phenyl]-2-imidazolidinone chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.16 (s, 1H), 7.87 (s, anhydrous pyridine 2H), 7.63 (m, 1H), 7.19 (m, 6H), 6.74 (s, 1H), 3.72 (t, 2H), 3.28 (t, 3H); MS (ESI) m/z: 400 (M + H⁺)

EXAMPLE 21 N³-[4-(1,1-dioxido-2-isothiazolidinyl)phenyl]-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazole-3,5-diamine (Cpd 116)

Using the procedure of Example 15, 4-(1,1-dioxoisothiazolidin-2-yl)phenylamine (0.92 g, 4.36 mmol), diphenyl cyanocarbonimidate (1.10 g, 4.36 mmol) and hydrazine (43.6 mL, 1.0 M solution in THF, 43.6 mmol) were reacted to produce Compound 21A (1.2 g, 95%) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 11.05 (s, 1H), 8.58 (s, 1H), 7.47 (d, 2H), 7.05 (d, 2H), 5.78 (s, 1H), 3.55 (t, 2H), 3.32 (t, 2H), 2.30 (p, 2H); MS (ESI) m/z: 295 (M+H⁺). Using the procedure of Example 1, Compound 21A was acylated with 3-methylthiophene-2-carboxylic acid Compound 20B mediated by DIC/HOBt in DMF to produce Compound 116 (48% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.38 (s, 1H), 8.01 (d, 1H), 7.73 (s, 2H), 7.62 (d, 2H), 7.15 (d, 2H), 7.08 (d, 1H), 3.67 (t, 2H), 3.42 (t, 2H), 2.58 (s, 3H), 2.35 (p, 2H); MS (ESI) m/z: 419 (M+H⁺).

Using the procedure for Example 21, the following compounds were prepared by acylation of the intermediate Compound 21A using the indicated starting material in place of Compound 20B and reagent(s):

Cpd Name/Data Starting Mat'l 117 1-(2,6-difluorobenzoyl)-N³-[4-(1,1-dioxido-2- 2,6-difluorobenzoyl isothiazolidinyl)phenyl]-1H-1,2,4-triazole-3,5-diamine chloride in ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.31 (s, 1H), 7.80 (s, anhydrous pyridine 2H), 7.62 (t, 2H), 7.28 (m, 3H), 7.01 (d, 2H), 3.63 (t, 2H), 3.35 (t, 2H), 2.32 (p, 2H); MS (ESI) m/z: 435 (M + H⁺)

EXAMPLE 22 4-[[5-amino-1-(2,6-difluorobenzoyl)-1H-1,2,4-triazol-3-yl]amino]-N-(2-pyridinyl)-benzenesulfonamide (Cpd 118)

Using the procedure of Example 15, 4-amino-N-pyridin-2-yl-benzenesulfonamide (1.48 g, 5.96 mmol), diphenyl cyanocarbonimidate (1.42 g, 5.96 mmol), and hydrazine (59.6 mL, 1.0 M solution in THF, 59.6 mmol) were reacted to provide Compound 22A (0.98 g, 50%) as a white solid. ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.22 (s, 1H), 8.05 (s, 1H), 7.73 (m, 3H), 7.53 (d, 2H), 7.04 (d, 1H), 6.85 (m, 2H), 5.85 (s, 2H); MS (ESI) m/z: 332 (M+H⁺). Using the procedure of Example 1, Compound 22A was acylated with 2,6-difluorobenzoyl chloride Compound 1F in anhydrous pyridine to provide Compound 118 (61% yield). ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.85 (s, 1H), 8.00-7.90 (m, 2H), 7.65 (m, 1H), 7.59 (d, 2H), 7.35 (d, 2H), 7.25 (t, 2H), 7.04 (d, 1H), 6.81 (t, 1H), 3.31 (s, 2H); MS (ESI) m/z: 472 (M+H⁺).

Using the procedure for Example 22, the following compounds were prepared by acylation of the intermediate Compound 22A using the indicated starting material in place of Compound 1F and reagent(s):

Cpd Name/Data Starting Mat'1 119 4-[[5-amino-1-[(5-ethyl-2-thienyl)carbonyl]- 5-ethylthiophene-2- 1H-1,2,4-triazol-3-yl]amino]-N-(2- carboxylic acid pyridinyl)-benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.87 (s, DIC/HOBt in DMF 1H), 8.11 (d, 1H), 8.01 (s, 1H), 7.90 (s, 1H), 7.75 (m, 4H), 7.68 (d, 2H), 7.63 (t, 1H), 7.07 (m, 2H), 6.85 (m, 1H), 2.95 (q, 2H), 1.32 (t, 3H); MS (ESI) m/z: 470 (M+H⁺) 120 4-[[5-amino-1-[(3,5-dimethyl-2-thienyl)car- 3,5- bonyl]-1H-1,2,4-triazol-3-yl]amino]-N-(2- dithylthiophene-2- pyridinyl)-benzenesulfonamide carboxylic acid ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.84 (s, mediated by 1H), 7.98 (s, 1H), 7.91 (s, 1H), 7.74 (m, DIC/HOBt in DMF 4H), 7.71 (d, 2H), 7.63 (t, 1H), 7.07 (m 1H), 6.85 (m, 2H), 2.53 (s, 3H), 2.52 (s, 3H); MS (ESI) m/z: 470 (M+H⁺) 121 4-[[5-amino-1-[(3-methyl-2-thienyl)car- 3-methylthiophene- bonyl]-1H-1,2,4-triazol-3-yl]amino]-N-(2- 2-carboxylic acid pyridinyl)-benzenesulfonamide mediated by ¹H NMR (300 MHz, (CD₃)₂SO) δ 9.85 (s, DIC/HOBt in DMF 1H), 8.02 (m, 2H), 7.79 (m, 4H), 7.73 (d, 2H), 7.63 (t, 1H), 7.13 (d, 1H), 7.07 (m 1H), 6.81 (m, 1H), 2.61 (s, 3H); MS (ESI) m/z: 456 (M+H⁺)

BIOLOGICAL EXAMPLES

The utility of the compounds to treat or ameliorate a cyclin dependent kinase and tyrosine kinase mediated disorders was determined using the following procedures.

Eample 1

CDK1 Screening Assay

A kinase reaction mixture was prepared containing 50 mM Tris-HCl pH=8, 10 mM MgCl₂, 0.1 mM Na₂PO₄, 1 mM DTT, 10 μM ATP, 0.025 μM biotinylated histone-H1 peptide substrate and 0.2 μCuries per well ^(33P)-γ-ATP [2000-3000 Ci/mmol]. 70 μL of the kinase reaction mixture was dispensed into the well of a streptavidin coated FlashPlate™ (Cat. # SMP103, NEN, Boston, Mass.). Then 1 μL of test compound stock in 100% DMSO was added to the wells resulting in a final concentration of 1% DMSO in the reaction with a 100 μl final reaction volume. Next, CDK1:Cyclin-B protein was diluted in 50 mM Tris-HCl pH=8.0, 0.1% BSA at a concentration of 1 ng per μL and 30 μl (30 ng enzyme per test well) was added to each well to initiate the reaction. The reaction was incubated for one hour at 30° C. At the end of the 1-hour incubation, the reaction was terminated by aspirating the reaction mixture from the plate and washing the wells twice with PBS containing 100 mM EDTA. The histone-H1 biotinylated peptide substrate became immobilized on the Flashplate™ and the incorporation of ³³P-γ-ATP was measured by reading the plate on a scintillation counter. Inhibition of the enzymatic activity of CDK1 was measured by observing a reduced amount of ³³P-γ-ATP incorporated into the immobilized peptide.

VEGF-R Screening Assay

A kinase reaction mixture was prepared containing 50 mM Tris-HCl pH=8, 10 mM MgCl₂, 0.1 mM Na₃PO₄, 1 mM DTT, 10 μM ATP, 0.025 μM biotinylated peptide substrate and 0.8 μCuries per well ^(33P)-γ-ATP [2000-3000 Ci/mmol]. 70 μL of the kinase reaction mixture was dispensed into the well of a streptavidin coated FlashPlate™ (Cat. # SMP103, NEN, Boston, Mass.). Then 1 μL of test compound stock in 100% DMSO was added to the wells resulting in a final concentration of 1% DMSO in the reaction with a 100 μL final reaction volume. Next, soluble rat tyrosine kinase containing an N-terminal 6×HIS tag was diluted in 50 mM Tris-HCl pH=8.0, 0.1% BSA at a concentration of 5 ng per μL and 30 μL (150 ng enzyme per test well) was added to each well to initiate the reaction. The reaction was incubated for one hour at 30° C. At the end of the 1-hour incubation, the reaction was terminated by aspirating the reaction mixture from the plate and washing the wells twice with PBS containing 100 mM EDTA. The PLC1 biotinylated peptide substrate became immobilized on the Flashplate™ and the incorporation of ³³P-γ-ATP was measured by reading the plate on a scintillation counter. Inhibition of the enzymatic activity of the VEGF-R was measured by observing a reduced amount of ³³P-γ-ATP incorporated into the immobilized peptide.

IC₅₀ data for VEGF-R and CDK are shown in Table 1. IC₅₀ values listed as >10 or >100 indicate no observed 50% inhibition at the highest dose tested, nor was an inhibition maxima observed. ND means not tested.

TABLE 1 IC₅₀ (uM) Cpd CDK1 VEGF-R HER2 CDK2 1 0.0064 0.1062 ND ND 2 0.0032 0.3659 ND ND 3 0.0080 0.3324 ND ND 4 0.02232 0.3866 ND ND 5 0.1436 0.5209 ND ND 6 0.0394 8.144 ND ND 7 0.057 >10 ND ND 8 0.136 >100 ND ND 9 0.039 1.597 ND ND 10 0.252 0.4907 ND ND 11 0.3046 >100 ND ND 12 0.0454 0.08406 ND ND 13 0.5353 0.5318 ND ND 14 0.0045 0.0267 ND ND 15 0.0048 0.0511 ND ND 16 0.0021 0.0137 ND ND 17 0.0025 0.027 ND ND 18 0.067 0.058 ND ND 19 0.0339 0.2907 ND ND 20 0.0044 0.031 ND ND 21 0.0088 0.023 ND ND 22 0.0318 0.2334 ND ND 23 0.0889 0.0353 ND ND 24 0.2823 0.0674 ND ND 25 0.01953 0.064 ND ND 26 18.4 ˜100 ND ND 27 ˜100 >100 ND ND 28 0.9816 13.25 ND ND 29 70.39 ˜100 ND ND 30 0.017 0.0406 ND ND 31 0.030 0.044 ND ND 32 0.0031 0.0219 ND ND 33 0.0032 0.0234 ND ND 34 0.0016 0.0681 ND ND 35 0.0011 0.0463 ND ND 36 1.561 18.61 ND ND 37 10.5 54.98 ND ND 38 0.0299 0.8795 ND ND 39 0.0122 0.3336 ND ND 40 0.1949 11.06 ND ND 42 0.1342 0.4433 ND ND 43 0.0873 0.6279 ND ND 44 0.5223 2.677 ND ND 45 0.0137 0.3553 ND ND 46 0.0358 0.4527 ND ND 47 0.0586 2.523 ND ND 48 2.603 ˜100 ND ND 49 >1 >1 >1 ND 50 0.12 0.19 0.20 ND 51 0.007 0.019 0.031 ND 52 0.035 0.11 1.47 ND 53 >1 >1 >1 ND 54 0.55 14.0 6.1 ND 55 0.022 0.58 2.19 ND 56 0.49 20.0 4.17 ND 57 0.067 0.19 1.32 ND 58 0.014 0.42 0.65 ND 59 1.54 0.92 7.83 ND 60 1.37 0.89 7.46 ND 66 0.0006 0.032 0.060 0.0005 67 0.0037 0.038 0.052 0.0014 68 0.66 5.14 ND ND 69 0.023 0.69 0.14 ND 70 0.035 0.91 1.23 ND 71 3.71 0.43 1.30 ND 72 1.43 0.38 1.49 ND 73 2.20 0.029 0.176 ND 74 0.46 0.021 0.062 ND 75 0.52 0.033 0.060 ND 76 0.012 0.53 ˜1 0.0044 78 0.0066 0.42 0.78 0.0017 79 >100 >100 >100 >100 80 0.0452 0.9346 1.1200 ND 81 0.0178 0.4822 1.6990 0.001 82 0.0090 0.0217 0.1183 ND 83 0.0084 0.0404 0.0130 ND 84 0.0038 0.0432 0.0516 ND 85 0.4126 0.1943 >1 ND 86 0.1087 0.0869 0.4128 ND 87 0.2171 0.0168 0.4357 ND 88 0.3134 0.9647 ˜1 ND 89 0.7096 0.5979 ˜10 ND 90 ˜1 ˜0.1 ˜0.1 ND 91 0.3349 0.0736 0.2233 ND 92 0.3493 0.1336 0.0558 ND 93 0.4525 0.7267 ˜1 ND 94 0.2716 0.4089 0.1469 ND 95 0.1387 0.2598 0.9138 ND 96 0.3726 0.8171 1.4080 ND 97 ˜0.1 ˜0.1 ˜0.01 ND 98 >0.1 ˜0.1 ˜0.1 ND 99 0.3656 0.098 0.0945 ND 100 0.3404 1.1000 1.2870 ND 101 0.1426 0.6498 0.8195 ND 102 2.3530 1.1010 2.2600 ND 103 0.0074 0.0449 0.2284 0.001 104 0.0156 0.0156 0.2033 0.001 105 0.0461 0.2756 0.8448 0.002 106 0.1250 0.5591 37.230 0.001 107 0.0138 0.0324 0.0297 0.002 108 0.0657 0.0307 0.0417 0.0120 109 0.1465 0.0252 0.1705 0.0210 110 0.0219 0.0136 0.0055 0.0050 111 0.1499 0.7019 16.830 ND 112 0.0870 0.7039 16.350 ND 113 0.2545 0.0302 0.0680 ND 114 0.2275 0.3125 1.3870 ND 115 0.3134 0.4666 1.4420 ND 116 0.0208 0.0261 0.1313 0.0010 117 0.0352 0.9080 5.4350 0.0070 118 0.33 0.397 >10 0.021 119 0.0672 0.0571 ˜1 0.0030 120 0.277 0.082 1.0 0.0090 121 0.0997 0.0272 0.7169 0.0030 122 2.21 >10 ND ND 123 2.05 5.53 ˜100 0.031 128 0.0032 0.118 0.111 0.0033

Example 2

Kinase Selectivity Assays

Assays to test compound inhibition of other kinases were preformed using methods that measure the amount of phosphorylation of a biotinylated peptide substrate. Biotinylated peptide substrates were selected from the literature as appropriate for the enzyme being evaluated. The general procedure used to assay for kinase activity is as follows: A kinase reaction mix was prepared in 50 mM Tris-HCl pH=8, 10 mM MgCl₂, 0.1 mM Na₃VO₄, 1 mM DTT, 10 μM ATP, 0.25-1 μM biotinylated peptide substrate, 0.2-0.82 μCuries per well ³³P-γ-ATP [2000-3000 Ci/mmol]. Assay conditions vary slightly for each protein kinase, for example, insulin receptor kinase requires 10 mM MnCl₂ for activity and Calmodulin-dependent protein kinase requires calmodulin and 10 mM CaCl₂. These assay conditions are known in the art. The reaction mixture was dispensed into the wells of a streptavidin coated Flashplate and 1 μl drug stock in 100% DMSO was added to a 100 μl reaction volume resulting in a final concentration of 1% DMSO on the reaction. Enzyme was diluted in 50 mM Tris-HCl pH=8.0, 0.1% BSA and add to each well. The reaction was incubated for one hour at 30° C. in the presence of compound. After one hour the reaction mix was aspirated from the plate and the plate was washed with PBS containing 100 mM EDTA. The plate was read on a scintillation counter to determine ³³P-γ-ATP incorporated into the immobilized peptide. Test compounds were assayed in duplicate at 8 concentrations [100 uM, 10 uM, 1 uM, 100 nM, 10 nM, 1 nM, 100 pM, 10 pM]. A maximum and minimum signal for the assay was determined on each plate. The IC₅₀ was calculated from the dose response curve of the percent inhibition of the maximum signal in the assay according to the formula [max signal—background/test compound signal—background (100)=% inhibition] by graphing the percent inhibition against the log concentration of test compound. Known inhibitor compounds appropriate for the kinase being assayed were also included on each plate.

Definition and Source of Kinase Enzymes

VEGF-R (vascular endothelial growth factor receptor-2) is a fusion protein containing a polyhistidine tag at the N-terminus followed by amino acids 786-1343 of the rat VEGF-R2 kinase domain (GenBank Accession #U93306). CDK1 (cyclin dependent kinase 1) was isolated from insect cells expressing both the human CDK1 catalytic subunit and its positive regulatory subunit cyclin B (New England Biolabs, Beverly, Mass., Cat. # 6020). CDK2 in complex with cyclin A is commercially available (Upstate Biotech, Lake Placid, N.Y.). The CDK4 complex was composed of a mouse CDK4 protein and a mouse Cyclin D1 protein (The mouse CDK4 protein was genetically fused to an N-terminal Flag-epitope tag and the mouse Cyclin D1 protein was fused with an N-terminal AU-1 epitope tag. The genes encoding these proteins were transferred to commercially available baculoviral vectors. The recombinant CDK4/D1 complex was then made by co-infecting commercially available insect cells with viruses carrying these two constructs). Insulin Receptor Kinase consists of residues 941-1313 of the cytoplasmic domain of the beta-subunit of the human insulin receptor (BIOMOL, Plymouth Meeting, Pa., Cat. #SE-195). Protein Kinase A is the catalytic subunit of cAMP dependent protein kinase-A purified from bovine heart (Upstate Biotech, Lake Placid, N.Y., Cat#14-114). PKC (protein kinase-C) is the gamma or beta isoform of the human protein produced in insect cells (BIOMOL, Plymouth Meeting, Pa., Cat. #SE-143). Casein Kinase 1 is a truncation at amino acid 318 of the C-terminal portion of the rat CK1 delta isoform produced in E. coli (New England Biolabs, Beverly, Mass., Cat. #6030). Casein Kinase 2 includes the alpha and beta subunits of the human CK2 protein produced in E.coli (New England Biolabs, Beverly, Mass., Cat. #6010). Calmodulin Kinase (calmodulin-dependent protein kinase 2) is a truncated version of the alpha subunit of the rat protein produced in insect cells (New England Biolabs, Beverly, Mass., Cat. #6060). Glycogen Synthase Kinase-3 is the beta isoform of the rabbit enzyme produced in E. coli (New England Biolabs, Beverly, Mass., Cat. #6040). MAP Kinase is the rat ERK-2 isoform containing a polyhistidine tag at the N-terminus produced in E.coli. and activated by phosphorylation with MEK1 prior to purification (BIOMOL, Plymouth Meeting, Pa., Cat. #SE-137). ERK-1 protein (Discontinued from Calbiochem). EGFR (epidermal growth factor receptor) is purified from human A431 cell membranes (Sigma, St. Louis, Mo., Cat.# E3641). PDGF-R (platelet derived growth factor receptor) is a fusion protein containing a polyhistidine tag at the N-terminus followed by nucleotides 1874-3507 of the human PDGF-R beta subunit kinase domain (Accession #M21616). The HER2 (human epidermal growth factor receptor-2) construct contains a polyhistidine tag at the N-terminus followed by 24 additional amino acids and begins at amino acid 676 followed by the remainder of the HER2 cytoplasmic domain.

Peptide Substrates VEGF-R (Biotin)KHKKLAEGSAYEEV-Amide CDK1 (Biotin)KTPKKAKKPKTPKKAKKL-Amide CDK2 (Biotin)KTPKKAKKPKTPKKAKKL-Amide CDK4 (GST)AminoAcids 769-921 of retinoblastoma EGF-R (Biotin)Poly(GT)4:1 Protein Kinase A (Biotin)GRTGRRNSI-Amide PKC (Biotin)RFARKGSLRQKNV-NH2 Casein Kinase 1 (Biotin)KRRRALS(phospho)VASLPGL-Amide Casein Kinase 2 (Biotin)RREEETEEE-Amide Calmodulin Kinase Biotin)KKALRRQETVDAL-Amide GSK-3 Biotin)KRREILSRRP(phospho)SYR-Amide MAP Kinase ERK-1 (Biotin)APRTPGGRR-Amide MAP Kinase ERK-2 (Biotin)APRTPGGRR-Amide Insulin Kinase (Biotin)TRDIYETDYYRK-Amide FGF-R2 (Biotin)Poly(GT)4:1 PDGF-R (Biotin)KHKKLAEGSAYEEV-Amide HER2 (Biotin)KHKKLAEGSAYEEV-Amide

The IC₅₀ data for various kinases are shown in Table 2a through Table 2k. IC₅₀ values listed as >10 or >100 indicate no observed 50% inhibition at the highest dose tested for the indicated assay, nor was an inhibition maxima observed. Values shown as ˜10 indicate an approximate value based on an observed 50% inhibition. ND means not tested.

TABLE 2a Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 1 2 14 15 16 CDK1 0.006 0.003 0.0045 0.0048 0.021 PKA >100 >100 5.43 4.26 ND Caseine 11.16 >100 0.348 0.547 0.214 Kinase 1 Caseine >100 >100 8.05 >100 >100 Kinase 2 PKC ND >100 ND ND ND ERK 1 ND ND >100 ND ND ERK 2 19.35 9.48 2.14 5.95 0.39 Calmodulin >100 >100 60.44 10.53 >100 Kinase 2 EGF-R >100 45.8 1.92 8.44 >100 VEGF-R 0.131 0.366 0.026 0.051 0.0137 Insulin R >100 9.8 1.2 2.42 >100 Kinase GSK-3 0.041 0.031 0.003 0.0018 0.004 PDGF-R 11.76 10.7 0.189 0.079 0.1 kinase FGF-R2 ND 0.269 0.027 ND ND Kinase

TABLE 2b Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 17 23 30 32 33 CDK1 0.0025 0.089 0.017 0.003 0.003 PKA ND >100 ND >100 >100 Caseine 0.643 0.113 1.54 0.181 0.104 Kinase 1 Caseine 2.65 >100 7.6 0.527 >10 Kinase 2 ERK 2 1.87 1.62 5.93 0.563 >10 Calmodulin 2.8 10.5 88.3 >100 >10 Kinase 2 EGF-R 4.13 >100 9.6 >100 >100 VEGF-R 0.027 0.035 0.0406 0.022 0.023 Insulin R 2.02 >100 4.96 0.123 0.316 Kinase GSK-3 0.009 0.016 0.014 0.003 0.004 PDGF-R kinase 0.081 0.629 0.392 0.074 0.039 HER2 Kinase ND ND ND 0.009 0.005

TABLE 2c Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 34 38 39 51 55 CDK1 0.002 0.029 0.012 0.007 0.020 PKA >100 >100 >100 0.911 >100 Caseine 0.182 6.1 4.1 0.223 9.6 Kinase 1 Caseine >100 >100 >100 1.78 >100 Kinase 2 ERK 2 >10 24.2 13.2 0.928 12.9 Calmodulin >100 >100 >100 0.813 >100 Kinase 2 EGF-R >100 >100 >100 1.1 16.12 VEGF-R 0.068 0.880 0.334 0.019 0.577 Insulin R >10 >100 19.4 0.077 >100 Kinase GSK-3 0.015 0.122 0.127 0.020 0.040 PDGF-R kinase 0.292 6.37 3.98 0.199 16.18 FGF-R2 Kinase ND ND ND ND 0.478 HER2 Kinase ND ND ND 0.031 2.19

TABLE 2d Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 57 58 61 62 63 CDK1 0.067 0.014 0.18 0.53 0.079 CDK2 ND ND 0.049 0.29 0.056 PKA >100 >100 ND ND ND Caseine Kinase 1 14.0 11.24 ND ND ND Caseine Kinase 2 >100 >100 ND ND ND ERK 2 >100 10.7 ND ND ND Calmodulin Kinase 2 >100 >100 ND ND ND EGF-R >100 >10 ND ND ND VEGF-R 0.191 0.419 0.072 0.064 0.32 Insulin R Kinase >100 >100 ND ND ND GSK-3 0.098 0.015 0.055 0.073 0.073 PDGF-R kinase 4.19 8.53 ND ND ND FGF-R2 Kinase ND 0.096 ND ND ND HER2 Kinase 1.32 0.654 0.82 0.41 0.15

TABLE 2e Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 64 65 66 69 70 CDK1 0.21 0.67 0.0006 0.023 0.035 CDK2 0.20 0.41 ND ND ND CDK4 ND ND ND 0.187 0.167 PKA ND ND 5.19 46.6 34.2 Caseine ND ND 2.75 16.6 35.7 Kinase 1 Caseine ND ND >100 >100 >100 Kinase 2 ERK 2 ND ND 1.0 12.5 19.4 Calmodulin ND ND 8.99 >100 >100 Kinase 2 EGF-R ND ND >10 >100 >100 VEGF-R 0.051 0.18 0.032 0.685 0.911 Insulin R ND ND >10 45.1 >100 Kinase GSK-3 0.021 0.10 0.137 0.147 0.22 PDGF-R kinase ND ND 1.58 0.1 16.2 FGF-R2 Kinase ND ND ND 0.365 0.273 HER2 Kinase 0.076 0.79 0.060 0.139 1.23

TABLE 2f Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 71 81 82 83 84 CDK1 3.71 0.018 0.009 0.008 0.004 CDK4 0.129 ND ND ND ND PKA >100 >100 >100 >100 2.2 Caseine >100 6.96 0.354 0.275 0.188 Kinase 1 Caseine >100 >100 >100 >100 1.67 Kinase 2 ERK 2 >100 11.68 1.95 >100 1.22 Calmodulin 60.9 >100 >100 >100 >100 Kinase 2 EGF-R >10 >100 >100 >100 >10 VEGF-R 0.43 0.482 0.022 0.040 0.043 Insulin R 35.3 29.6 1.1 >10 0.172 Kinase GSK-3 1.72 0.049 0.025 0.007 0.019 PDGF-R 27 7.76 0.042 0.113 0.280 kinase FGF-R2 0.441 0.268 0.089 0.022 0.300 Kinase HER2 1.30 1.7 0.118 0.013 0.052 Kinase

TABLE 2g Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd (IC₅₀ uM) 92 99 103 104 CDK1 0.349 0.366 0.007 0.0016 PKA >100 ND >100 >100 Caseine >10 >1 0.322 0.624 Kinase 1 Caseine >100 >100 5.3 >100 Kinase 2 PKC ND >100 ND ND ERK 2 >100 >100 0.845 >100 Calmodulin 19.7 >100 >100 >10 Kinase 2 EGF-R >100 >100 >10 >10 VEGF-R 0.134 0.098 0.045 0.016 Insulin R 3.08 >100 0.123 2.09 Kinase GSK-3 0.021 0.030 0.013 0.020 PDGF-R kinase 0.282 0.385 0.702 0.192 FGF-R2 Kinase 0.242 ND 0.170 0.200 HER2 Kinase 0.056 0.095 0.228 0.202

TABLE 2h Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 105 107 108 109 110 CDK1 0.046 0.014 0.066 0.147 0.022 PKA >100 >100 >100 >100 >100 Caseine 4.49 0.412 0.816 1.18 0.192 Kinase 1 Caseine >100 >10 >10 >10 >5 Kinase 2 ERK 2 18.19 >10 2.39 >10 8.75 Calmodulin >100 3.43 >10 >100 >100 Kinase 2 EGF-R 9.60 0.936 >100 >100 >10 VEGF-R 0.276 0.032 0.030 0.025 0.014 Insulin R 9.85 0.311 0.811 2.76 0.053 Kinase GSK-3 0.082 0.015 0.023 0.039 0.008 PDGF-R 2.20 0.143 0.217 0.413 0.285 kinase FGF-R2 0.142 0.235 0.307 0.244 0.153 Kinase HER2 0.845 0.030 0.042 0.170 0.006 Kinase

TABLE 2i Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 113 114 115 116 117 CDK1 0.254 0.228 0.313 0.021 0.035 PKA >100 >100 >100 >100 >100 Caseine 0.318 2.0 9.98 >1 13.46 Kinase 1 Caseine >100 >100 >100 >100 >100 Kinase 2 PKC >100 ND ND ND ND ERK 2 >100 15.8 >10 >100 >100 Calmodulin >10 >100 >100 >100 >100 Kinase 2 EGF-R >10 >100 >10 >100 >100 VEGF-R 0.030 0.313 0.467 0.026 0.908 Insulin R >10 >100 >10 >100 >100 Kinase GSK-3 0.071 0.431 0.391 0.062 1.04 PDGF-R 0.370 13.8 >10 0.302 >100 kinase HER2 0.068 1.39 1.44 0.131 5.44 Kinase

TABLE 2j Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 118 119 120 121 123 CDK1 0.330 0.067 0.277 0.099 2.05 PKA >100 >100 >100 >100 >100 Caseine >100 0.757 >10 >10 >100 Kinase 1 Caseine >100 >100 >100 >100 >100 Kinase 2 PKC ND >100 ND ND ND ERK 2 >100 >100 >100 >100 >100 Calmodulin >100 >100 >100 >100 >100 Kinase 2 EGF-R >100 0.159 >10 >10 >100 VEGF-R 0.397 0.057 0.082 0.027 5.52 Insulin R >100 0.159 >100 >100 >100 Kinase GSK-3 0.159 0.006 0.018 0.029 3.01 PDGF-R kinase >100 >10 0.822 0.394 >100 HER2 Kinase >10 1.0 1.0 0.717 >100

TABLE 2k Kinase Selectivity Kinase Assay Cpd Cpd Cpd Cpd Cpd (IC₅₀ uM) 124 125 126 127 128 CDK1 2.2 >100 >100 >100 0.003 CDK2 1.7 7.3 >100 >100 ND PKA ND ND ND ND >100 Caseine ND ND ND ND 8.97 Kinase 1 Caseine ND ND ND ND >100 Kinase 2 ERK 2 ND ND ND ND 2.07 Calmodulin ND ND ND ND 13.2 Kinase 2 EGF-R ND ND ND ND >100 VEGF-R 4.8 >100 >100 >100 0.118 Insulin R ND ND ND ND 2.65 Kinase GSK-3 3.0 >100 >100 >100 0.094 PDGF-R ND ND ND ND 1.91 kinase HER2 0.82 >100 ˜100 >100 0.11 Kinase

Example 3

Assay to Measure Inhibition of Cell Proliferation

The ability of a test compound to inhibit the proliferation of cell growth was determined by measuring incorporation of ¹⁴C-labelled thymidine into newly synthesized DNA within the cells. This method was used on cell lines derived from carcinomas originating from several tissues such as HeLa cervical adenocarcinoma (American Type Culture Collection (ATCC), Virginia, Cat. #CCL-2), A375 malignant melanoma (ATCC CRL-1619), SK-OV-3 ovarian adenocarcinoma (ATCC HTB-77) HCT-116 colon carcinoma (CCL-247), PC-3 prostate adenocarcinoma (ATCC CRL-1435), and MDA-MB-231 (Xenogen Corp.) In this way the effect of a compound on cell growth of cells with many different phenotypes can be determined. Cells were trypsinized and counted and 3000-8000 cells were added to each well of a 96-well CytoStar tissue culture treated scintillating microplate (Amersham #RPNQ0160) in complete medium in a volume of 100 μl. Cells were incubated for 24 hours in complete medium at 37° C. in an atmosphere containing 5% CO₂. Next, 1 μl of test compound in 100% DMSO was added to the wells of the plate. DMSO only was added to control wells. Cells were incubated for 24 more hours in complete medium at 37° C. in an atmosphere containing 5% CO₂. Methyl ¹⁴C-thymidine 56 mCi/mmol (NEN #NEC568 or Amersham #CFA532) was diluted in complete medium and 0.2 uCi/well was added to each well of the CytoStar plate in a volume of 20 μl. The plate was incubated for 24 hours at 37° C. plus 5% CO₂ in drug plus ¹⁴C-thymidine. The contents of the plate were discarded into a ¹⁴C radioactive waste container by inverting the plate and the plate was washed twice with 200 μl PBS. 200 μl of PBS is added to each well. The top of the plate was sealed with a transparent plate sealer and a white plate backing sealer (Packard #6005199) was applied to the bottom of the plate. The degree of methyl ¹⁴C-thymidine incorporation was quantified on a Packard Top Count.

TABLE 3 Inhibition of Cell Proliferation (IC₅₀ nM) Cell Line MDA- Cpd HeLa HCT-116 SK-OV-3 MB-231 PC-3 A375 1 284 254 750 587 119 447 14 550 1940 727 756 157 26460 15 91 127 242 550 107 247 16 263 213 2110 ND 368 942 17 215 309 3900 ND 294 4970 23 1180 376 1420 868 859 424 30 215 1930 5750 ND 951 8240 32 71 26 ND 131 30 ND 33 72 27 ND 171 37 ND 34 707 996 ND 898 626 ND 35 663 172 ND 1140 231 ND 38 4560 2270 ND 6760 2750 ND 39 270 1410 ND 2910 625 ND 51 220 ND ND ND 57 333 57 339 95 ND ND ND 113 58 186 1,270 ND ND 362 981 66 35 20 ND ND ND 92 69 218 1,720 ND ND 8 441 70 196 1,580 ND ND 11 1,100 71 1,920 ND ND ND 25 ND 80 880 ND 16,300 ND 272 ND 81 189 778 348 ND 25 1,770 82 245 ND 921 ND 15 ND 83 122 192 ND ND 12 556 84 142 ND 461 ND 23 ND 92 269 ND ND ND 1,120 ND 99 3,350 ND ND ND 1,690 ND 103 62 75 ND ND ND 115 104 186 41 ND ND ND 108 105 626 320 ND ND ND 652 107 177 95 ND ND ND 113 108 221 76 ND ND ND 259 109 479 51 ND ND 307 ND 110 237 187 ND ND ND 239 113 242 281 281 ND ND ND 114 2,530 1,380 ND ND ND 1,690 115 676 486 ND ND ND 529 116 380 349 ND ND ND 639 117 2,060 1,120 ND ND ND 2,190 118 1,940 1,170 ND ND ND 1,620 119 146 117 ND ND ND 199 120 978 334 ND ND ND 259 121 310 608 ND ND ND 215 123 28,500 4,140 ND ND ND >10,000 128 128 910 ND ND ND 968

Example 4

In Vivo Models—Inhibition of Tumor Growth

The in vivo effect of a compound on the growth of human tumor cells can be evaluated by implanting human tumor cells into the hindflank of athymic mice and administering test compound to the mice. Human tumor cells originating from a variety of different tumor types, such as A375 human melanoma cells, are implanted subcutaneously into the hindflank of male athymic mice (Charles River) and allowed to establish a sizeable tumor for 6-10 days as determined by caliper measurements. Test compound is then administered by injecting the compound formulated in an appropriate vehicle intraperitoneally into the mice once a day for 30 days. The test compound can also be administered by other routes such as orally, sub cutaneously or by intravenous infusion. The size of the tumor in this study is measured every four days and the degree of inhibition is determined by comparing drug-treated animals to animals that are injected with vehicle only.

The synergistic action or enhancement of conventional chemotherapeutic agent by a test compound can also be determined with this model by comparing animals treated with the standard therapy alone to animals treated with test compound plus the same standard therapy. An additive effect on the delay of tumor growth will be observed if synergistic action due to test compound is occurring.

While the foregoing specification teaches the principles of the present invention, with examples provided for the purpose of illustration, it will be understood that the practice of the invention encompasses all of the usual variations, adaptations and modifications as come within the scope of the following claims and their equivalents.

Throughout this application, various publications are cited. The disclosure of these publications is hereby incorporated by reference into this application to describe more fully the state of the art to which this invention pertains. 

1. A compound of the following formula:

wherein R₄ is selected from the group consisting of: C₁₋₈alkyl, which is optionally substituted on a terminal carbon with a substituent selected from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino, amino substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, cyano, (halo)₁₋₃, hydroxy, nitro, cycloalkyl, aryl, thienyl, imidazolinyl, and triazolyl; C₁₋₈alkoxy or C₁₋₈alkoxy substituted on a terminal carbon with a substituent selected from the group consisting of (halo)₁₋₃ and hydroxy; —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl; amino, or amino substituted with two substituents independently selected from the group consisting of C₁₋₈alkyl and —SO₂—(C₁₋₈)alkyl; —C(O)amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl; —SO₂—, substituted with one substituent selected from the group consisting of thienyl, imidazolinyl, triazolyl and amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, thienyl, imidazolinyl, and triazolyl; cycloalkyl, aryl, thienyl, imidazolinyl, and triazolyl; wherein cycloalkyl, aryl, thienyl, imidazolinyl, and triazolyl are optionally substituted with 1 to 3 substituents independently selected from the group consisting of C₁₋₈alkyl, wherein alkyl is optionally substituted on a terminal carbon with a substituent selected from the group consisting of amino, or amino substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, cyano, (halo)₁₋₃, hydroxy and nitro, C₁₋₈alkoxy, amino, substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl), cyano, halo, hydroxy and nitro; and, wherein thienyl, imidazolinyl, or triazolyl are optionally substituted with 1 to 2 oxo substituents; X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—; and, R₃ is selected from the group consisting of: C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl, wherein alkyl, alkenyl and alkynyl are optionally substituted on a terminal carbon with a substituent selected from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, or amino substituted with two substituents independently selected from the group consisting of hydrogen, cyano, (halo)₁₋₃, hydroxy, nitro, aryl and thienyl, imidazolinyl, or triazolyl; wherein aryl, thienyl, imidazolinyl, or triazolyl are optionally substituted with 1 to 3 substituents independently selected from the group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl, (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl, hydroxy(C₁₋₈)alkoxy and nitro; cycloalkyl, thienyl, imidazolinyl, triazolyl, and aryl, wherein cycloalkyl, thienyl, imidazolinyl, triazolyl, and aryl are optionally substituted with 1 to 3 substituents independently selected from the group consisting of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl, aryl, thienyl, imidazolinyl, or triazolyl are optionally substituted with 1 to 2 substituents independently selected from the group consisting of: C₁₋₈alkyl, C₂₋₈alkenyl, wherein alkyl and alkenyl are optionally substituted on a terminal carbon with a substituent selected from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino, amino substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, cyano, (halo)₁₋₃, hydroxy, nitro, cycloalkyl, thienyl, imidazolinyl, triazolyl, and aryl, —CH(OH)—C₁₋₈)alkyl, C₁₋₈alkoxy, optionally substituted on a terminal carbon with a substituent selected from the group consisting of (halo)₁₋₃ and hydroxy; —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino, or amino substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₈alkyl and —C(O)(C₁₋₈)alkyl, —C(O)amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, —SO₂—, substituted with one substituent selected from the group consisting of thienyl, imidazolinyl, triazolyl and amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl; —NH—SO₂—(C₁₋₈)alkyl, cycloalkyl, thienyl, imidazolinyl, triazolyl, optionally substituted with 1 to 2 oxo substituents, aryl, thienyl, imidazolinyl, and triazolyl, with a proviso when R₃ is amino substituted with two substitutents, the two substitutents independently are not selected from hydrogen and aryl, wherein aryl is phenyl; and pharmaceutically acceptable salts thereof.
 2. A compound of the following formula:

wherein R₄ is selected from the group consisting of: amino, and amino substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₄alkyl and —SO₂—(C₁₋₄)alkyl); —SO₂—, substituted with one substituent selected from the group consisting of amino, or amino substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₄alkyl, —C₁₋₄alkylamino, wherein —C₁₋₄alkylamino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₄alkyl; X is selected from the group consisting of —CO(O)—, —C(S)— and —SO₂—; and R₃ is selected from the group consisting of: C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl, wherein alkyl, alkenyl and alkynyl are optionally substituted on a terminal carbon with a substituent selected from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino or amino substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, cyano, (halo)₁₋₃, hydroxy, nitro, aryl and thienyl, imidazolinyl, or triazolyl; wherein aryl, thienyl, imidazolinyl, or triazolyl are optionally substituted with 1 to 3 substituents independently selected from the group consisting of C₁₋₈alkyl, cyano, halo, (halo)₁₋₃(C₁₋₈)alkyl, (halo)₁₋₃(C₁₋₈)alkoxy, hydroxy, hydroxy(C₁₋₈)alkyl, hydroxy(C₁₋₈)alkoxy and nitro; cycloalkyl, thienyl, imidazolinyl, triazolyl, and aryl, wherein cycloalkyl, thienyl, imidazolinyl, triazolyl, and aryl are optionally substituted with 1 to 3 substituents independently selected from the group consisting of cyano, halo, hydroxy and nitro; and, wherein cycloalkyl, aryl, thienyl, imidazolinyl, or triazolyl are optionally substituted with 1 to 2 substituents independently selected from the group consisting of: C₁₋₈alkyl, C₂₋₈alkenyl, wherein alkyl and alkenyl are optionally substituted on a terminal carbon with a substituent selected from the group consisting of —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino, amino substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, cyano, (halo)₁₋₃, hydroxy, nitro, cycloalkyl, thienyl, imidazolinyl, triazolyl, and aryl, —CH(OH)—(C₁₋₈)alkyl, C₁₋₈alkoxy, optionally substituted on a terminal carbon with a substituent selected from the group consisting of (halo)₁₋₃ and hydroxy; —C(O)H, —C(O)(C₁₋₈)alkyl, —CO₂H, —CO₂(C₁₋₈)alkyl, amino, or amino substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₈alkyl and —C(O)(C₁₋₈)alkyl, —C(O)amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, —SO₂—, substituted with one substituent selected from the group consisting of thienyl, imidazolinyl, triazolyl and amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₈alkyl and —C₁₋₈alkylamino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl; —NH—SO₂—(C₁₋₈)alkyl, cycloalkyl, thienyl, imidazolinyl, triazolyl, optionally substituted with 1 to 2 oxo substituents, aryl, thienyl, imidazolinyl, and triazolyl; and pharmaceutically acceptable salts thereof.
 3. A compound of the following formula:

wherein R₄ is selected from the group consisting of: —SO₂—, substituted with one substituent selected from the group consisting of thienyl, imidazolinyl, triazolyl and amino, wherein amino is substituted with two substituents independently selected from the group consisting of hydrogen, C₁₋₈alkyl, —C₁₋₈alkylamino, wherein —C₁₋₈alkylamino is substituted with two substituents independently selected from the group consisting of hydrogen and C₁₋₈alkyl, thienyl, imidazolinyl, and triazolyl; and X is selected from the group consisting of —C(O)—, —C(S)— and —SO₂—; R₃ is selected from the group consisting of: C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl, cycloalkyl, thienyl, imidazolinyl, triazolyl, and phenyl; wherein the C₁₋₈alkyl, C₂₋₈alkenyl, C₂₋₈alkynyl, cycloalkyl, thienyl, imidazolinyl, triazolyl, and phenyl substituents are optionally substituted with 1 to 3 substituents independently selected from the group consisting of C₁₋₈alkyl, C₁₋₈ alkyl(mono-, di- or tri-halo), C₁₋₈ alkoxy, cyano, halo, hydroxy and nitro —C(O)(C₁₋₈)alkyl and —CH(OH)(C₁₋₈)alkyl; and pharmaceutically acceptable salts thereof.
 4. The compound of claim 3 wherein X, R₃ and R₄ are dependently selected from the group consisting of: X R₃ R₄ C(O) (2,6-F₂)Ph 4-SO₂—NH₂; C(O) (2,6-F₂-3-CH₃)Ph 4-SO₂—NH₂; C(O) (2,4,6-F₃)Ph 4-SO₂—NH₂; C(O) (2-F)Ph 4-SO₂—NH₂; C(O) (2,4-F₂)Ph 4-SO₂—NH₂; C(O) (2-F-6-CF₃)Ph 4-SO₂—NH₂; C(O) (2,6-Cl₂)Ph 4-SO₂—NH₂; C(O) (2,4,6-Cl₃)Ph 4-SO₂—NH₂; C(O) (2-NO₂)Ph 4-SO₂—NH₂; C(O) [2,6-(OCH₃)₂]Ph 4-SO₂—NH₂; C(O) [2,4,6-(CH₃)₃]Ph 4-SO₂—NH₂; C(O) Ph 4-SO₂—NH₂; C(O) 2-thienyl 4-SO₂—NH₂; C(O) (3-CH₃)2-thienyl 4-SO₂—NH₂; C(O) (3-F)2-thienyl 4-SO₂—NH₂; C(O) (3-Cl)2-thienyl 4-SO₂—NH₂; C(O) (3-OCH₂CH₃)2-thienyl 4-SO₂—NH₂; C(O) (3-NHCOCH₃)2-thienyl 4-SO₂—NH₂; C(O) (5-CH₃)2-thienyl 4-SO₂—NH₂; C(O) (5-Br)2-thienyl 4-SO₂—NH₂; C(O) (5-COCH₃)2-thienyl 4-SO₂—NH₂; C(O) 3-thienyl 4-SO₂—NH₂; C(O) 3a, 7a-dihydrobenzo[b]thien-2-yl 4-SO₂—NH₂; C(O) (5-CH₂CH₃)2-thienyl 4-SO₂—NH₂; C(O) [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH₂; C(O) (3-Br)2-thienyl 4-SO₂—NH₂; C(O) Cyclopentyl 4-SO₂—NH₂; C(O) Cyclohexyl 4-SO₂—NH₂; C(O) 2-thienyl-CH₂ 4-SO₂—NH₂; C(O) 2-thienyl-(CH)₂ 4-SO₂—NH₂; C(O) (2,6-F₂)—Ph—CH₂ 4-SO₂—NH₂; C(O) (2,6-F₂)Ph(CH)₂ 4-SO₂—NH₂; C(O) Cycloheptyl 4-SO₂—NH₂; C(O) 4-CH₃-cyclohexyl 4-SO₂—NH₂; C(O) 4-CH₃-cyclohexyl 4-SO₂—NH₂; C(O) 4-(CH₂)₃CH₃-cyclohexyl 4-SO₂—NH₂; C(O) 5-(2-pyridinyl)2-thienyl 4-SO₂—NH₂; C(O) 3-(1H-pyrrol-1-yl)2-thienyl 4-SO₂—NH₂; C(O) 5-[C(CH₃)₃]2-thienyl 4-SO₂—NH₂; C(O) 5-[(CH)₂C(O)OC(CH₃)₃]2-thienyl 4-SO₂—NH₂; C(O) (2,6-F₂-3-NO₂)Ph 4-SO₂—NH₂; C(O) (2,6-F₂-3-NH₂)Ph 4-SO₂—NH₂; C(O) [2,6-(CH₃)₂]Ph 4-SO₂—NH₂; C(O) (2-CH₃)Ph 4-SO₂—NH₂; C(O) [2,6-F₂-3-CH(OH)CH₃]Ph 4-SO₂—NH₂; C(O) (2,6-F₂)Ph 4-SO₂—NH₂; C(O) (2,6-F₂3-CH₃)Ph 4-SO₂—NH₂; C(S) —NH[(2,6-F₂)Ph] 4-SO₂—NH₂; C(O) —NH[(2,6-F₂)Ph] 4-SO₂—NH₂; SO₂ (2,6-F₂)Ph 4-SO₂—NH₂; C(O) (2-Cl-3-CH₃-6-F)Ph 4-SO₂—NH₂; C(O) (2-Cl-6-F)Ph 4-SO₂—NH₂; and C(O) (2,6-F₂-5-Cl)Ph 4-SO₂—NH₂.


5. The compound of claim 3 wherein X, R₃ and R₄ are dependently selected from the group consisting of: X R₃ R₄ C(O) (2,6-F₂)Ph 4-SO₂—NH₂; C(O) (2,6-F₂-3-CH₃)Ph 4-SO₂—NH₂; and C(S) —NH[(2,6-F₂)Ph] 4-SO₂—NH₂.


6. The compound of claim 3 which is selected from the group consisting of: 5-amino-3-[[4-(aminosulfonyl)phenyl]amino]-N-(2,6-difluorophenyl)-1H-1,2,4-triazole-1-carbothioamide; 5-amino-3-[[4-(aminosulfonyl)phenyl]amino]-N-(2,6-difluorophenyl)-1H-1,2,4-triazole-1-carboxamide; 4-[[5-amino-1-(2-chloro-6-fluoro-3-methylbenzoyl)-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide; 4-[[5-amino-1-(2-chloro-6-fluorobenzoyl)-1H-1,2,4-triazol-3-yl]amino]-benzenesulfonamide; 4-[[5-amino-1-(2,6-difluoro-3-methylbenzoyl)-1H-1,2,4-triazol-3-yl]amino]-N-methyl-benzenesulfonamide; 4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]-N-methyl-benzenesulfonamide; 4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]-N-[2-(dimethylamino)ethyl]-benzenesulfonamide; 1-[4-[[5-amino-1-[(3-methyl-2-thienyl)carbonyl]-1H-1,2,4-triazol-3-yl]amino]phenyl]-2-imidazolidinone.
 7. The compound of claim 3 wherein X, R₃ and R₄ are dependently selected from the group consisting of: X R₃ R₄ C(O) (2,6-F₂)Ph 4-SO₂—NH(CH₂CH₃); C(O) (2,6-F₂)Ph 4-SO₂—NH(CH₃); C(O) (2,6-F₂-3-CH₃)Ph 4-SO₂—NH(CH₃); C(O) (3-CH₃)2-thienyl 4-SO₂—NH(CH₃); C(O) [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH(CH₃); C(O) (5-CH₂CH₃)2-thienyl 4-SO₂—NH(CH₃); C(O) [3,5-(CH₃)₂]2-thienyl 4-SO₂—N(CH₃)₂; C(O) (5-CH₂CH₃)2-thienyl 4-SO₂—N(CH₃)₂; C(O) (3-CH₃)2-thienyl 4-SO₂—N(CH₃)₂; C(O) (2,6-F₂-3-CH₃)Ph 4-SO₂—N(CH₃)₂; and C(O) (2,6-F₂)Ph 4-SO₂—N(CH₃)₂.


8. The compound of claim 3 wherein X, R₃ and R₄ are dependently selected from the group consisting of: X R₃ R₄ C(O) (2,6-F₂-3-CH₃)Ph 4-(1-H-1,2,4-triazol-1-yl); C(O) (2,6-F₂)Ph 4-(1-H-1,2,4-triazol-1-yl); C(O) (5-CH₂CH₃)2-thienyl 4-(1-H-1,2,4-triazol-1-yl); C(O) [3,5-(CH₃)₂]2-thienyl 4-(1-H-1,2,4-triazol-1-yl); C(O) (3-CH₃)2-thienyl 4-(1-H-1,2,4-triazol-1-yl); C(O) (2,6-F₂)Ph 4-(1-H-1,3,4-triazol-1-yl); C(O) (2,6-F₂-3-CH₃)Ph 4-(1-H-1,3,4-triazol-1-yl); and C(O) (3-CH₃)2-thienyl 4-(1-H-1,3,4-triazol-1-yl).


9. The compound of claim 3 wherein X, R₃ and R₄ are dependently selected from the group consisting of: X R₃ R₄ C(O) (2,6-F₂-3-CH₃)Ph 4-(1-H-1,2,4-triazol-1-yl); C(O) (2,6-F₂)Ph 4-(1-H-1,2,4-triazol-1-yl); C(O) (5-CH₂CH₃)2-thienyl 4-(1-H-1,2,4-triazol-1-yl); C(O) [3,5-(CH₃)₂]2-thienyl 4-(1-H-1,2,4-triazol-1-yl); C(O) (3-CH₃)2-thienyl 4-(1-H-1,2,4-triazol-1-yl); C(O) (2,6-F₂-3-CH₃)Ph 4-(1-H-1,3,4-triazol-1-yl); C(O) (3-CH₃)2-thienyl 4-(1-H-1,3,4-triazol-1-yl).


10. The compound of claim 3 wherein X, R₃ and R₄ are dependently selected from the group consisting of: X R₃ R₄ C(O) (5-CH₂CH₃)2-thienyl 4-SO₂—NH[(CH₂)₂N(CH₃)₂]; C(O) (3-CH₃)2-thienyl 4-SO₂—NH[(CH₂)₂N(CH₃)₂]; C(O) (2,6-F₂-3-CH₃)Ph 4-SO₂—NH[(CH₂)₂N(CH₃)₂]; C(O) (2,6-F₂)Ph 4-SO₂—NH[(CH₂)₂N(CH₃)₂]; C(O) [3,5-(CH₃)₂]2-thienyl 4-SO₂—NH[(CH₂)₂N(CH₃)₂]; C(O) [3,5-(CH₃)₂]2-thienyl 4-NH—SO₂—CH₃; C(O) (3-CH₃)2-thienyl 4-NH—SO₂—CH₃; C(O) (5-CH₂CH₃)2-thienyl 4-NH—SO₂—CH₃; C(O) (2,6-F₂)Ph 4-NH—SO₂—CH₃; and C(O) (2,6-F₂-3-CH₃)Ph 4-NH—SO₂—CH₃.


11. A pharmaceutical composition comprising a compound of claim 1 and a pharmaceutically acceptable carrier.
 12. A pharmaceutical composition made by mixing a compound of claim 1 and a pharmaceutically acceptable carrier. 